2025/03/29 更新

写真b

クリタ カズヨシ
栗田 和好
KURITA Kazuyoshi
*大学が定期的に情報更新している項目(その他は、researchmapの登録情報を転載)
所属*
理学部 物理学科
理学研究科 物理学専攻 博士課程後期課程
理学研究科 物理学専攻 博士課程前期課程
職名*
教授
学位
Ph.D(物理学) ( コロンビア大学(アメリカ合衆国) ) / Ph.D ( Columbia University, Graduate School of Arts and Sciences )
連絡先
メールアドレス
研究キーワード
  • 原子核構造

  • 不安定核

  • 電子散乱

  • 宇宙初期

  • 偏極陽子

  • 量子色力学

  • 重イオン反応

  • ポーラリメーター

  • 学内職務経歴*
    • 2009年4月 - 現在 
      理学部   物理学科   教授
    • 2009年4月 - 現在 
      理学研究科   物理学専攻 博士課程前期課程   教授
    • 2009年4月 - 現在 
      理学研究科   物理学専攻 博士課程後期課程   教授
    • 2007年4月 - 2009年3月 
      理学部   物理学科   准教授
    • 2007年4月 - 2009年3月 
      理学研究科   物理学専攻 博士課程前期課程   准教授
    • 2007年4月 - 2009年3月 
      理学研究科   物理学専攻 博士課程後期課程   准教授
    • 2002年4月 - 2007年3月 
      理学部   物理学科   助教授
    • 2005年4月 - 2007年3月 
      理学研究科   物理学専攻 博士課程前期課程   助教授
    • 2005年4月 - 2007年3月 
      理学研究科   物理学専攻 博士課程後期課程   助教授

    ▼全件表示

     

    研究分野

    • 自然科学一般 / 素粒子、原子核、宇宙線、宇宙物理にする理論

    経歴

    • 2025年4月 - 現在 
      立教大学,理学研究科 物理学専攻,前期主任

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    • 2012年9月 - 現在 
      立教大学   理学部   計量管理責任者

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    • 2009年4月 - 現在 
      立教大学   理学研究科 物理学専攻博士課程前期課程   教授

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    • 2009年4月 - 現在 
      立教大学   理学研究科 物理学専攻博士課程後期課程   教授

      詳細を見る

    • 2009年4月 - 現在 
      立教大学   理学部 物理学科   教授

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    • 2003年4月 - 現在 
      立教大学   理学部   放射線取扱主任者

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    • 2023年4月 - 2024年3月 
      立教大学,理学部 物理学科,学科長

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    • 2020年4月 - 2021年3月 
      立教大学,入学センター,センター長

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    • 2018年4月 - 2020年3月 
      立教大学   大学教育開発・支援センター   センター長

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    • 2018年4月 - 2019年3月 
      立教大学   大学教育開発・支援センター   副センター長

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    • 2015年4月 - 2018年3月 
      立教大学   理学研究科 先端科学計測研究センター   センター長

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    • 2012年4月 - 2015年3月 
      立教大学   理学研究科 先端科学計測研究センター   副センター長

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    • 2011年4月 - 2012年3月 
      立教大学   キャリア教育オフィス   オフィス長

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    • 2008年4月 - 2010年3月 
      立教大学   コオプ教育・インターンシップオフィス   コオプ補佐

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    • 2007年4月 - 2009年3月 
      立教大学   理学部 物理学科   学科長

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    • 2007年4月 - 2008年3月 
      立教大学   理学研究科   准教授

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    • 2007年4月 - 2008年3月 
      立教大学   理学部 物理学科   准教授

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    • 2002年4月 - 2007年3月 
      立教大学   理学研究科   助教授

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    • 2002年4月 - 2007年3月 
      立教大学   理学部 物理学科   助教授

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    • 2000年4月 - 2002年3月 
      理研BNL研究センター   研究員

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    • 1997年10月 - 2000年3月 
      理化学研究所   基礎特別研究員

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    • 1997年4月 - 1997年10月 
      理化学研究所   奨励研究員

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    • 1994年4月 - 1997年3月 
      筑波大学物理学系   専任講師

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    • 1991年6月 - 1994年3月 
      筑波大学物理学系   助手

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    ▼全件表示

    学歴

    • - 1992年2月 
      コロンビア大学   物理学研究科

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      国名: アメリカ合衆国

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    • - 1986年3月 
      東京大学   理学部   物理学科

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      国名: 日本国

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    委員歴

    • 2015年6月 - 2021年5月 
      日本物理教育学会   理事

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      団体区分:学協会

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    • 2015年4月 - 2017年3月 
      日本物理学会   選挙管理委員

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      団体区分:学協会

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    • 2013年4月 - 2015年3月 
      日本物理教育学会   編集委員

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      団体区分:学協会

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    • 2011年4月 - 2014年3月 
      日本物理教育学会   評議員

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      団体区分:学協会

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    受賞

    • 2006年5月  
      Beam Instrumentation Workshop  Faraday Cup Award 
       
      Kazuyoshi Kurita, Haixin Huang

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      受賞区分:国際学会・会議・シンポジウム等の賞 

      受賞国:アメリカ合衆国

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    論文

    • First Observation of Electron Scattering from Online-Produced Radioactive Target

      K. Tsukada, Y. Abe, A. Enokizono, T. Goke, M. Hara, Y. Honda, T. Hori, S. Ichikawa, Y. Ito, K. Kurita, C. Legris, Y. Maehara, T. Ohnishi, R. Ogawara, T. Suda, T. Tamae, M. Wakasugi, M. Watanabe, H. Wauke

      Physical Review Letters   2023年8月30日

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      掲載種別:研究論文(学術雑誌)  

      DOI: 10.1103/PhysRevLett.131.092502

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    • Ion-trapping properties of SCRIT: Time evolutions of 138Ba charge state distributions

      R. Ogawara, Y. Abe, T. Ohnishi, A. Enokizono, M. Hara, T. Hori, S. Ichikawa, K. Kurita, Y. Maehara, T. Suda, K. Tsukada, M. Wakasugi, M. Watanabe, H. Wauke

        541   90 - 92   2023年8月

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      掲載種別:研究論文(学術雑誌)  

      DOI: 10.1016/j.nimb.2023.04.048

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    • Fringing-RF-Field-Activated DC-to-Pulse Converter at the SCRIT Electron Scattering Facility

      Masanori Wakasugi, Mamoru Togasaki, Tetsuya Ohnishi, Kazuyoshi Kurita, Ryota Toba, Masamitsu Watanabe, Kohei Yamada

      Proceedings of 10th International Conference on Nuclear Physics at Storage Rings (STORI’17)   2021年6月14日

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      掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Journal of the Physical Society of Japan  

      DOI: 10.7566/jpscp.35.011028

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    • Present status of electron-beam-driven RI separator for SCRIT at RIKEN RI Beam Factory 査読有り

      T. Ohnishi, S. Ichikawa, M. Nakano, K. Kurita, M. Wakasugi

      Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms463   290 - 292   2020年1月

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      掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier BV  

      DOI: 10.1016/j.nimb.2019.05.006

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    • Electron scattering from Pb-208 and Xe-132 ions at the SCRIT facility 査読有り

      Tsukada, Kyo, Adachi, Kousuke, Enokizono, Akitomo, Fujita, Takahiro, Hara, Masahiro, Hori, Toshitada, Hori, Mitsuki, Ichikawa, Shin-ichi, Kasama, Keita, Kurita, Kazuyoshi, Namba, Kazuki, Ohnishi, Tetsuya, Suda, Toshimi, Tamae, Tadaaki, Togasaki, Mamoru, Wakasugi, Masanori, Watanabe, Masamitsu, Yamada, Kouhei

      HYPERFINE INTERACTIONS240 ( 1 )   2019年9月

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:SPRINGER INTERNATIONAL PUBLISHING AG  

      We constructed the SCRIT (Self-Confining Radioactive Ion Target) electron scattering facility to realize electron scattering off short-lived unstable nuclei at RIKEN in Japan. Electron scattering is one of the most powerful and reliable tools to study structures of atomic nuclei. However, it has been extremely difficult to apply electron scattering to unstable nuclei because of target preparation problems. SCRIT is a novel ion-trapping technique that achieves high luminosity of more than 10(27) cm(-?2)s(-?1) with a small amount of target ions. Following completion of the facility, a series of commissioning experiments of the entire facility with several stable nuclear targets, including Pb-208 and Xe-132, were performed. Momentum transfer distributions of elastic scattering from those targets were successfully measured at several electron beam energies, and the charge density distribution of the Xe-132 nucleus was extracted for the first time.

      DOI: 10.1007/s10751-019-1635-2

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    • First Elastic Electron Scattering from Xe 132 at the SCRIT Facility 査読有り

      K. Tsukada, A. Enokizono, T. Ohnishi, K. Adachi, T. Fujita, M. Hara, M. Hori, T. Hori, S. Ichikawa, K. Kurita, K. Matsuda, T. Suda, T. Tamae, M. Togasaki, M. Wakasugi, M. Watanabe, K. Yamada

      Physical Review Letters118 ( 26 ) 262501 - 262501   2017年6月27日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society  

      The first elastic electron scattering has been successfully performed at the self-confining radioactive-isotope ion target (SCRIT) facility, the world's first electron scattering facility for SCRIT technique achieved high luminosity (over 1027 cm-2 s-1, sufficient for determining the nuclear shape) with only 108 target ions. While Xe132 used in this time as a target is a stable isotope, the charge density distribution was first extracted from the momentum transfer distributions of the scattered electrons by comparing the results with those calculated by a phase shift calculation.

      DOI: 10.1103/PhysRevLett.118.262501

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    • Development of a Buffer Gas-Free Buncher for Low Energy RI Ion Beam

      M. Togasaki, M. Wakasugi, K. Kurita

      HIAT2015WEPB25   253 - 255   2016年2月

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      記述言語:英語   出版者・発行元:JACoW  

      DOI: 10.18429/JACoW-HIAT2015-WEPB25

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    • 20pAX-11 SCRIT法を用いたXe同位体標的における電子散乱の角度分布測定

      塚田 暁, 足立 江介, 市川 進一, 榎園 昭智, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 水流 照明, 戸ヶ崎 衛, 原 雅弘, 藤田 峻広, 堀 利匡, 堀 充希, 松田 一衛, 山田 耕平, 若杉 昌徳, 渡邊 正満

      日本物理学会講演概要集71   337 - 337   2016年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.71.1.0_337

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    • 20pAX-12 SCRIT法を用いたXe同位体標的における電子散乱のルミノシティ測定

      榎園 昭智, 足立 江介, 市川 進一, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 塚田 暁, 戸ヶ崎 衛, 原 雅弘, 藤田 峻広, 堀 充希, 堀 利匡, 松田 一衛, 山田 耕平, 若杉 昌徳, 渡邊 正満

      日本物理学会講演概要集71   338 - 338   2016年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.71.1.0_338

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    • SCRIT法を用いた<sup>132</sup>Xeの電荷分布測定

      塚田 暁, 足立 江介, 市川 進一, 榎園 昭智, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 戸ヶ崎 衛, 原 雅弘, 藤田 峻広, 堀 利匡, 堀 充希, 山田 耕平, 若杉 昌徳, 渡邊 正満

      日本物理学会講演概要集71   273 - 273   2016年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      <p>我々は不安定核・電子散乱実験を実現するべく、理化学研究所においてSCRIT電子散乱施設を建設している。2015年度からはタングステンおよびXe同位体(安定核)標的を用いたコミッショニング実験を行ってきた。本講演では、SCRIT法による^132^Xe標的における原子核電荷分布測定について報告する。</p>

      DOI: 10.11316/jpsgaiyo.71.2.0_273

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    • SCRIT 法を用いた Xe 同位体標的・電子散乱実験における ルミノシティ測定

      藤田 峻広, 足立 江介, 市川 進一, 榎園 昭智, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 塚田 暁, 戸ヶ崎 衛, 原 雅弘, 堀 利匡, 堀 充希, 松田 一衛, 山田 耕平, 若杉 昌徳, 渡邊 正満

      日本物理学会講演概要集71   272 - 272   2016年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      <p>我々は理化学研究所和光地区 RIBF 棟において、不安定核を標的とした電子散乱実験にむけて電子散乱実験施設を建設している。現在安定核^132^Xeを用いた電子散乱実験を行っている。本講演では^132^Xe・電子散乱実験における LMon の最新結果について発表する。</p>

      DOI: 10.11316/jpsgaiyo.71.2.0_272

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    • 26pSH-3 SCRIT実験のためのイオンビームクーラー・バンチャーの開発

      戸ヶ崎 衛, 大西 哲哉, 栗田 和好, 鳥羽 瞭太, 原 雅弘, 山田 耕平, 若杉 昌徳

      日本物理学会講演概要集70   281 - 281   2015年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.70.2.0_281

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    • 26pSH-2 SCRIT法を用いた電子・不安定核散乱実験に向けたルミノシティ決定精度の評価

      榎園 昭智, 足立 江介, 市川 進一, 大西 哲哉, 栗田 和好, 古小路 裕樹, 須田 利美, 玉江 忠明, 塚田 暁, 水流 照明, 戸ヶ崎 衛, 原 正弘, 藤田 峻広, 堀 利匡, 松田 一衛, 山田 耕平, 若杉 昌徳, 渡辺 正満

      日本物理学会講演概要集70   280 - 280   2015年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.70.2.0_280

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    • 26pSH-1 SCRIT法を用いた電子・不安定核散乱実験に向けた電子スペクトロメータのアクセプタンス評価

      塚田 暁, 市川 進一, 榎園 昭智, 大西 哲哉, 栗田 和好, 古小路 裕樹, 須田 利美, 玉江 忠明, 水流 輝明, 戸ケ崎 衛, 原 雅弘, 堀 利匡, 松田 一衛, 山田 耕平, 若杉 昌徳, 渡辺 正満

      日本物理学会講演概要集70   279 - 279   2015年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.70.2.0_279

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    • 22pCF-4 SCRIT実験における散乱電子スペクトロメーターの開発

      松尾 咲希, 市川 進一, 榎園 昭智, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 塚田 暁, 水流 輝明, 戸ヶ崎 徹, 原 雅弘, 堀 利匡, 松田 一衛, 森谷 洋祐, 米山 俊平, 若杉 昌徳

      日本物理学会講演概要集70   340 - 340   2015年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.70.1.0_340

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    • 21aCD-13 SCRIT電子スペクトロメータの運動量分解能とアクセプタンス評価

      塚田 暁, 市川 進一, 榎園 昭智, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 水流 輝明, 戸ケ崎 衛, 堀 利匡, 原 雅弘, 松尾 咲希, 松田 一衛, 森谷 洋祐, 米山 俊平, 若杉 昌徳

      日本物理学会講演概要集70   243 - 243   2015年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.70.1.0_243

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    • 23pCF-10 SCRIT実験用ルミノシティモニタ

      米山 俊平, 榎園 昭智, 大西 哲哉, 栗田 和好, 須田 利美, 玉江 忠明, 塚田 暁, 水流 輝明, 戸ヶ崎 衛, 松尾 咲希, 松田 一衛, 森谷 洋祐, 若杉 昌徳

      日本物理学会講演概要集70   361 - 361   2015年

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

      DOI: 10.11316/jpsgaiyo.70.1.0_361

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    • 不安定核構造を映す電子顕微鏡をつくる 査読有り

      若杉昌徳, 大西哲也, 須田利美, 栗田和好

      物理学会誌68 ( 12 ) 810 - 817   2013年12月

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      記述言語:日本語   掲載種別:研究論文(学術雑誌)  

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    • Electron-beam-driven RI separator for SCRIT (ERIS) at RIKEN RI beam factory 査読有り

      T.Ohnishi, S.Ichikawa, K.Koizumi, K.Kurita, Y.Miyashita, R.Ogawara, S.Tamaki, M.Togasaki, M.Wakasugi

      Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms317 ( 15 ) 357 - 360   2013年8月

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

      DOI: 10.1016/j.nimb.2013.07.029

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    • Construction of the SCRIT electron scattering facility at the RIKEN RI Beam Factory 査読有り

      Wakasugi, M. Ohnishi, T. Wang, S. Miyashita, Y. Adachi, T. Amagai, T. Enokizono, A. Enomoto, A. Haraguchi, Y. Hara, M. Hori, T. Ichikawa, S. Kikuchi, T. Kitazawa, R. Koizumi, K. Kurita, K. Miyamoto, T. Ogawara, R. Shimakura, Y. Takehara, H. Tamae, T. Tamaki, S. Togasaki, M. Yamaguchi, T. Yanagi, K. Suda, T

      Nucl. Instrum. and MethodB317   668 - 673   2013年

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      DOI: 10.1016/j.nimb.2013.04.037

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    • Ion-trapping properties of SCRIT

      R. Ogawara, M. Wakasugi, K. Kurita

      Nuclear Instruments and MethodsB317   674 - 678   2013年

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      記述言語:英語   出版者・発行元:Elsevier  

      DOI: 10.1016/j.nimb.2013.08.014

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    • Development of an Amplifier IC with Wide Dynamic Range for Si Detector in RIKEN SAMURAI Spectrometer

      A. Takuma, A. Taketani, H. Murakami, K. Kurita, M. Kurokawa, M. Tanaka

      2012 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD (NSS/MIC)2012   854 - 857   2012年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IEEE  

      A large acceptance and high magnetic rigidity spectrometer facility, SAMURAI is under construction at RIKEN. We plan to perform breakup reaction experiments that focus on the proton rich nuclei structure. The Si tracker needs to detect multiple nuclear fragments from the breakup reaction simultaneously. Atomic numbers of those fragments lie between 1 and 50. In the case of Sn breakup reaction, the energy deposition of fully stripped Z=50 fragment is 2500 times as large as that of Z=1 fragment. In order to realize such measurements, an amplifier with wide dynamic range of more than 2500 is required. Because it must operate under vacuum, it is necessary to minimize the amount of material. Therefore, we developed an amplifier IC which satisfies the requirements by implementing a square root gain response circuit.

      DOI: 10.1109/NSSMIC.2012.6551225

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    • Nuclear physics at the SCRIT electron scattering facility 査読有り

      Toshimi Suda, Tatsuya Adachi, Tatsuya Amagai, Akitomo Enokizono, Masahiro Hara, Toshitada Hori, Shin'ichi Ichikawa, Kazuyoshi Kurita, Takaya Miyamoto, Ryo Ogawara, Tetsuya Ohnishi, Yuuto Shimakura, Tadaaki Tamae, Mamoru Togasaki, Masanori Wakasugi, Shuo Wang, Kayoko Yanagi

      PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS2012 ( 1 ) 03C008 - 03C008   2012年

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:OXFORD UNIV PRESS INC  

      The SCRIT electron scattering facility is under construction at the RIKEN RI Beam Factory. This is the world's first facility dedicated to the study of the structure of short-lived nuclei by electron scattering, which has been a long-standing dream for nuclear physics. A novel Self-Confining RI Target (SCRIT) technique makes this challenging research possible. A series of test experiments using stable nuclei performed at this partially completed facility show that the collision luminosity between electron beam and target nucleus reaches 10(27) cm(-2) s(-1), which is required for an elastic electron scattering measurement to determine the charge density distribution of the target nucleus. The first electron scattering for unstable Sn isotopes will take place in the year 2014.

      DOI: 10.1093/ptep/pts043

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    • Assembly procedure for the silicon pixel ladder for PHENIX silicon vertex tracker 査読有り

      Y. Onuki, Y. Akiba, H. En&apos;yo, K. Fujiwara, Y. Haki, K. Hashimoto, R. Ichimiya, M. Kasai, M. Kawashima, K. Kurita, M. Kurosawa, E. J. Mannel, K. Nakano, R. Pak, M. Sekimoto, W. E. Sondheim, A. Taketani, M. Togawa, Y. Yamamoto

      NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT606 ( 3 ) 395 - 403   2009年7月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

      The silicon vertex tracker (VTX) will be installed in the summer of 2010 to enhance the physics capabilities of the Pioneering High Energy Nuclear Interaction eXperiment (PHENIX) experiment at Brookhaven National Laboratory. The VTX consists of two types of silicon detectors: a pixel detector and a strip detector. The pixel detector consists of 30 pixel ladders placed on the two inner cylindrical layers of the VTX. The ladders are required to be assembled with high precision, however, they should be assembled in both cost and time efficient manner. We have developed an assembly bench for the ladder with several assembly fixtures and a quality assurance (Q/A) system using a 3D measurement machine. We have also developed an assembly procedure for the ladder, including a method for dispensing adhesive uniformly and encapsulation of bonding wires. The developed procedures were adopted in the assembly of the first pixel ladder and satisfy the requirements. (C) 2009 Elsevier B.V. All rights reserved.

      DOI: 10.1016/j.nima.2009.04.041

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    • First Demonstration of Electron Scattering Using a Novel Target Developed for Short-Lived Nuclei 査読有り

      T. Suda, M. Wakasugi, T. Emoto, K. Ishii, S. Ito, K. Kurita, A. Kuwajima, A. Noda, T. Shirai, T. Tamae, H. Tongu, S. Wang, Y. Yano

      PHYSICAL REVIEW LETTERS102 ( 10 ) 102501 - 102501   2009年3月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      We carried out a demonstrative electron scattering experiment using a novel ion-trap target exclusively developed for short-lived highly unstable nuclei. Using stable (133)Cs ion as a target, this experiment completely mimicked electron scattering off short-lived nuclei. Achieving a luminosity higher than 10(26) cm(-2) s(-1) with around only 10(6) trapped ions on the electron beam, the angular distribution of elastic scattering was successfully measured. This experiment clearly demonstrates that electron scattering off rarely produced short-lived nuclei is practical with this target technique.

      DOI: 10.1103/PhysRevLett.102.102501

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    • Electron scattering based on a novel internal target technique: SCRIT

      M. Wakasugi, T. Emoto, S. Ito, S. Wang, T. Suda, Y. Yano, K. Kurita, K. Ishii, T. Tamae, A. Kuwajima, A. Noda, T. Shiari, H. Tongu

      European Physical Journal A42 ( 3 ) 453 - 456   2009年

    • ELECTRON SCATTERING OFF SHORT-LIVED RADIOACTIVE NUCLEI

      S. Wang, T. Emoto, Y. Furukawa, K. Ishii, S. Ito, T. Koseki, K. Kurita, A. Kuwajima, T. Masuda, A. Morikawa, M. Nakamura, A. Noda, T. Ohnishi, T. Shirai, T. Suda, H. Takeda, T. Tamae, H. Tongu, M. Wakasugi, Y. Yano

      International Journal of Modern Physics E-Nuclear Physics18   518-523   2009年

    • Novel internal target for electron scattering off unstable nuclei 査読有り

      M. Wakasugi, T. Emoto, Y. Furukawa, K. Ishii, S. Ito, T. Koseki, K. Kurita, A. Kuwajima, T. Masuda, A. Morikawa, M. Nakamura, A. Noda, T. Ohnishi, T. Shirai, T. Suda, H. Takeda, T. Tamae, H. Tongu, S. Wang, Y. Yano

      Physical Review Letters100 ( 16 ) 164801   2008年4月22日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      A novel internal target has been developed, which will make electron scattering off short-lived radioactive nuclei possible in an electron storage ring. An "ion trapping" phenomenon in the electron storage ring was successfully utilized for the first time to form the target for electron scattering. Approximately 7×106 stable Cs133 ions were trapped along the electron beam axis for 85ms at an electron beam current of 80mA. The collision luminosity between the stored electrons and trapped Cs ions was determined to be 2.4(8)×1025cm-2s-1 by measuring elastically scattered electrons. © 2008 The American Physical Society.

      DOI: 10.1103/PhysRevLett.100.164801

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    • Novel internal target for electron scattering off unstable nuclei

      M. Wakasugi, T. Emoto, Y. Furukawa, K. Ishii, S. Ito, T. Koseki, K. Kurita, A. Kuwajima, T. Masuda, A. Morikawa, M. Nakamura, A. Noda, T. Ohnishi, T. Shirai, T. Suda, H. Takeda, T. Tamae, H. Tongu, S. Wang, Y. Yano

      Physical Review Letters100   2008年

    • A novel radioactive isotope ion target SCRIT 査読有り

      Kurita Kazuyoshi, Masuda Tetsuya, Koseki Tadashi, Noda Akira, Shirai Toshiyuki, Tongu Hiromu, Furukawa Yukihiro, Tamae Tadaaki, Ito Sachiko, Ohnishi Tetsuya, Suda Toshimi, Takeda Hiroyuki, Wang Shuo, Emoto Takashi, Nakamura Masato, Wakasugi Masanori, Yano Yasushige

      BEAM INSTRUMENTATION WORKSHOP 2006868   384 - +   2006年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

      DOI: 10.1063/1.2401427

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    • Fiddling carbon strings with polarized proton beams 招待有り 査読有り

      Haixin Huang, Kazuyoshi Kurita

      BEAM INSTRUMENTATION WORKSHOP 2006868   3 - +   2006年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

      An innovative polarimeter based on proton carbon elastic scattering in the Coulomb Nuclear Interference (CNI) region was first successfully tested in the Brookhaven AGS. CNI Polarimeters were then installed in the AGS and both RHIC rings. The polarimeter consists of ultra-thin carbon targets and silicon strip detectors. The waveform digitizers used for signal readout allow deadtime-less data processing on the fly. Polarimeters are crucial instrumentation for the RHIC spin physics program. This paper summarizes the polarimeter design issues and operation results.

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    • Nuclear modification factors for hadrons at forward and backward rapidities in deuteron-gold collisions at root s(NN)=200 GeV

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, A Al-Jamel, J Alexander, K Aoki, L Aphecetche, R Armendariz, SH Aronson, R Averbeck, TC Awes, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, F Bauer, A Bazilevsky, S Belikov, MT Bjorndal, JG Boissevain, H Borel, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, MP Comets, P Constantin, M Csanad, T Csorgo, JP Cussonneau, D d'Enterria, K Das, G David, F Deak, H Delagrange, A Denisov, A Deshpande, EJ Desmond, A Devismes, O Dietzsch, JL Drachenberg, O Drapier, A Drees, A Durum, D Dutta, Dzhordzhadze, V, YV Efremenko, H En'yo, B Espagnon, S Esumi, DE Fields, C Finck, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, Y Fukao, SY Fung, S Gadrat, M Germain, A Glenn, M Gonin, J Gosset, Y Goto, R Granier de Cassagnac, N Grau, SV Greene, M Grosse Perdekamp, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, K Hasuko, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, P Hidas, H Hiejima, JC Hill, R Hobbs, W Holzmann, K Homma, B Hong, A Hoover, T Horaguchi, T Ichihara, VV Ikonnikov, K Imai, M Inaba, M Inuzuka, D Isenhower, L Isenhower, M Ishihara, M Issah, A Isupov, BV Jacak, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, F Kajihara, S Kametani, N Kamihara, M Kaneta, JH Kang, K Katou, T Kawabata, A Kazantsev, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, E Kim, GB Kim, HJ Kim, E Kinney, A Kiss, E Kistenev, A Kiyomichi, C Klein-Boesing, H Kobayashi, L Kochenda, Kochetkov, V, R Kohara, B Komkov, M Konno, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, GJ Kunde, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, Y Le Bornec, A Lebedev, S Leckey, DM Lee, MJ Leitch, MAL Leite, XH Li, H Lim, A Litvinenko, MX Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, H Masui, F Matathias, T Matsumoto, MC McCain, PL McGaughey, Y Miake, TE Miller, A Milov, S Mioduszewski, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, D Mukhopadhyay, M Muniruzzaman, S Nagamiya, JL Nagle, T Nakamura, J Newby, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, H Okada, K Okada, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, Pantuev, V, Papavassiliou, V, J Park, WJ Park, SF Pate, H Pei, Penev, V, JC Peng, H Pereira, Peresedov, V, A Pierson, C Pinkenburg, RP Pisani, ML Purschke, AK Purwar, JM Qualls, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, SSE Rosendahl, P Rosnet, VL Rykov, SS Ryu, N Saito, T Sakaguchi, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, M Shimomura, A Sickles, CL Silva, D Silvermyr, KS Sim, A Soldatov, RA Soltz, WE Sondheim, SP Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, S Takagi, EM Takagui, A Taketani, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, A Taranenko, P Tarjan, TL Thomas, M Togawa, J Tojo, H Torii, RS Towell, VN Tram, Tserruya, I, Y Tsuchimoto, H Tydesjo, N Tyurin, TJ Uam, HW van Hecke, J Velkovska, M Velkovsky, Veszpremi, V, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, N Willis, FK Wohn, CL Woody, W Xie, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, C Zhang, S Zhou, J Zimanyi, L Zolin, Zong, X

      PHYSICAL REVIEW LETTERS94 ( 8 ) 6   2005年3月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      We report on charged hadron production in deuteron-gold reactions at roots(NN) = 200 GeV. Our measurements in the deuteron direction cover 1.4&lt;eta&lt;2.2, referred to as forward rapidity, and in the gold direction -2.0&lt;eta&lt;-1.4, referred to as backward rapidity, and a transverse momentum range p(T)=0.5-4.0 GeV/c. We compare the relative yields for different deuteron-gold collision centrality classes. We observe a suppression relative to binary collision scaling at forward rapidity, sensitive to low momentum fraction (x) partons in the gold nucleus, and an enhancement at backward rapidity, sensitive to high momentum fraction partons in the gold nucleus.

      DOI: 10.1103/PhysRevLett.94.082302

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    • Measurement of single electron event anisotropy in Au+Au collisions at sNN=200 GeV

      S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J. S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. d'Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, K. A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En'yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H. A. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G. B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J. C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T. A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. van Hecke, J. Velkovska, M. Velkovsky, V. Veszprémi, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, L. Zolin

      Physical Review C - Nuclear Physics72 ( 2 )   2005年

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society  

      The transverse momentum dependence of the azimuthal anisotropy parameter v2, the second harmonic of the azimuthal distribution, for electrons at midrapidity (|η|&lt
      0.35) has been measured with the PHENIX detector in Au+Au collisions at sNN=200 GeV. The measurement was made with respect to the reaction plane defined at high rapidities (|η|=3.1-3.9). From the result we have measured the v2 of electrons from heavy flavor decay after subtraction of the v2 of electrons from other sources such as photon conversions and Dalitz decay from light neutral mesons. We observe a nonzero single electron v2 with a 90% confidence level in the intermediate-pT region. The precision of the present data set does not permit us to conclude definitively that heavy quarks exhibit thermalization with the transverse flow of the bulk matter. © 2005 The American Physical Society.

      DOI: 10.1103/PhysRevC.72.024901

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    • Jet structure of baryon excess in Au+Au collisions at sNN=200GeV

      S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, A. Al-Jamel, J. Alexander, R. Amirikas, K. Aoki, L. Aphecetche, R. Armendariz, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, F. Bauer, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, M. T. Bjorndal, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J. S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, M. P. Comets, P. Constantin, M. Csanád, T. Csörgo, J. P. Cussonneau, D. d'Enterria, K. Das, G. David, F. Deák, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, J. L. Drachenberg, O. Drapier, A. Drees, K. A. Drees, R. du Rietz, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En'yo, B. Espagnon, S. Esumi, L. Ewell, D. E. Fields, C. Finck, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, Y. Fukao, S. Y. Fung, S. Gadrat, S. Garpman, M. Germain, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H. A. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, K. Hasuko, R. Hayano, N. Hayashi, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, P. Hidas, H. Hiejima, J. C. Hill, R. Hobbs, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Horaguchi, T. Ichihara, V. V. Ikonnikov, K. Imai, M. Inaba, M. Inuzuka, D. Isenhower, L. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, M. Kaneta, J. H. Kang, S. S. Kapoor, K. Katou, T. Kawabata, A. Kazantsev, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G. B. Kim, H. J. Kim, E. Kinney, W. W. Kinnison, A. Kiss, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, R. Kohara, B. Komkov, M. Konno, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, G. J. Kunde, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, Y. Le Bornec, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, M. A.L. Leite, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, M. C. McCain, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, H. Okada, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P.T. Palounek, V. Pantuev, V. S. Pantuev, V. Papavassiliou, J. Park, W. J. Park, A. Parmar, S. F. Pate, H. Pei, T. Peitzmann, V. Penev, J. C. Peng, H. Pereira, V. Peresedov, A. Pierson, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Qualls, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, S. Rosendahl, P. Rosnet, V. L. Rykov, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, I. Shein, T. A. Shibata, K. Shigaki, T. Shiina, M. Shimomura, A. Sickles, C. L. Silva, D. Silvermyr, K. S. Sim, J. Simon-Gillo, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. Sorensen, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, S. Takagi, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, J. D. Tepe, T. L. Thomas, M. Togawa, J. Tojo, H. Torii, R. S. Towell, V. N. Tram, I. Tserruya, Y. Tsuchimoto, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, T. J. Uam, H. W. van Hecke, J. Velkovska, M. Velkovsky, V. Veszprémi, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, N. Willis, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, J. Zimányi, L. Zolin, X. Zong

      Physical Review C - Nuclear Physics71 ( 5 ) 6   2005年

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society  

      Two particle correlations between identified meson and baryon trigger particles with 2.5&lt
      pT&lt
      4.0GeV/c and lower pT charged hadrons have been measured at midrapidity by the PHENIX experiment at RHIC in p+p,d+Au, and Au+Au collisions at sNN=200GeV. In noncentral Au+Au collisions, the probability of finding a hadron near in azimuthal angle to the trigger particles is almost identical for mesons and baryons and significantly higher than in p+p collisions. The associated yields for trigger baryons decrease in the most central collisions, consistent with some baryon production by thermal recombination in addition to hard scattering. © 2005 The American Physical Society.

      DOI: 10.1103/PhysRevC.71.051902

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    • Double helicity asymmetry in inclusive midrapidity pi(0) production for polarized p+p collisions at root s=200 GeV

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, A Al-Jamel, J Alexander, K Aoki, L Aphecetche, R Armendariz, SH Aronson, R Averbeck, TC Awes, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, F Bauer, A Bazilevsky, S Belikov, MT Bjorndal, JG Boissevain, H Borel, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, MP Comets, P Constantin, M Csanad, T Csorgo, JP Cussonneau, D d'Enterria, K Das, G David, F Deak, H Delagrange, A Denisov, A Deshpande, EJ Desmond, A Devismes, O Dietzsch, JL Drachenberg, O Drapier, A Drees, A Durum, D Dutta, Dzhordzhadze, V, YV Efremenko, H En'yo, B Espagnon, S Esumi, DE Fields, C Finck, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, Y Fukao, SY Fung, S Gadrat, M Germain, A Glenn, M Gonin, J Gosset, Y Goto, RG de Cassagnac, N Grau, SV Greene, MG Perdekamp, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, K Hasuko, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, P Hidas, H Hiejima, JC Hill, R Hobbs, W Holzmann, K Homma, B Hong, A Hoover, T Horaguchi, T Ichihara, VV Ikonnikov, K Imai, M Inaba, M Inuzuka, D Isenhower, L Isenhower, M Ishihara, M Issah, A Isupov, BV Jacak, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, F Kajihara, S Kametani, N Kamihara, M Kaneta, JH Kang, K Katou, T Kawabata, A Kazantsev, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, E Kim, GB Kim, HJ Kim, E Kinney, A Kiss, E Kistenev, A Kiyomichi, C Klein-Boesing, H Kobayashi, Kochetkov, V, R Kohara, B Komkov, M Konno, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, GJ Kunde, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, Y Le Bornec, A Lebedev, S Leckey, DM Lee, MJ Leitch, MAL Leite, Li, X, XH Li, H Lim, A Litvinenko, MX Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, H Masui, F Matathias, T Matsumoto, MC McCain, PL McGaughey, Y Miake, TE Miller, A Milov, S Mioduszewski, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, D Mukhopadhyay, M Muniruzzaman, S Nagamiya, JL Nagle, T Nakamura, J Newby, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, H Okada, K Okada, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, Pantuev, V, Papavassiliou, V, J Park, WJ Park, SF Pate, H Pei, Penev, V, JC Peng, H Pereira, Peresedov, V, A Pierson, C Pinkenburg, RP Pisani, ML Purschke, AK Purwar, J Qualls, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, S Rosendahl, P Rosnet, VL Rykov, SS Ryu, N Saito, T Sakaguchi, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, M Shimomura, A Sickles, CL Silva, D Silvermyr, KS Sim, A Soldatov, RA Soltz, WE Sondheim, S Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, S Takagi, EM Takagui, A Taketani, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, A Taranenko, P Tarjan, TL Thomas, M Togawa, J Tojo, H Torii, RS Towell, VN Tram, Tserruya, I, Y Tsuchimoto, H Tydesjo, N Tyurin, TJ Uam, HW van Hecke, J Velkovska, M Velkovsky, Veszpremi, V, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, N Willis, FK Wohn, CL Woody, W Xie, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, O Zaudtke, C Zhang, S Zhou, J Zimanyi, L Zolin, Zong, X

      PHYSICAL REVIEW LETTERS93 ( 20 ) 202002   2004年11月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      We present a measurement of the double longitudinal spin asymmetry in inclusive pi(0) production in polarized proton-proton collisions at roots=200 GeV. The data were taken at the Relativistic Heavy Ion Collider with average beam polarizations of 0.27. The measurements are the first in a program to study the longitudinal spin structure of the proton, using strongly interacting probes, at collider energies. The asymmetry is presented for transverse momenta 1-5 GeV/c at midrapidity, where next-to-leading-order perturbative quantum chromodynamic (NLO pQCD) calculations well describe the unpolarized cross section. The observed asymmetry is small and is compared to a NLO pQCD calculation with a range of polarized gluon distributions.

      DOI: 10.1103/PhysRevLett.93.202002

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    • SATURATION OF AZIMUTHAL ANISOTROPY IN AU+ AU COLLISIONS AT S(NN)**(1/2) 62-GEV TO 200-GEV.

      栗田 和好

      PHENIX Collaboration Phys.Rev.Lett.   7   2004年11月

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Bose-einstein correlations of charged pion pairs in Au + Au collisions at √sNN = 200 GeV

      S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J. S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. G. d'Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En'yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H. Å Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G. B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J. C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T. A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. van Hecke, J. Velkovska, M. Velkovsky, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, L. Zolin

      Physical Review Letters93 ( 15 ) 1 - 152302   2004年10月8日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      The use of PHENIX experiment at midrapidity in Au + Au collision at √sNN = 200 GeV for calculating Bose-Einstein correlation of identical charged ion pairs was discussed. It was found that the Bertsch-Partt radius parameters were determined as a function of the transverse momentum of the pair and as function of the collision. It was also observed that the value of Rout/Rside, as function of kT decrease from ∼1.1 to ∼ 0.8 over the range of kT. The results show that the measurements of the transverse momentum dependence of the HBT radii.

      DOI: 10.1103/PhysRevLett.93.152302

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    • PRODUCTION OF PHI MESONS AT MID-RAPIDITY IN S(NN)**(1/2) = 200-GEV AU+AU COLLISIONS AT RHIC.

      栗田 和好

      PHENIX Collaboration Phys.Rev.C   26   2004年10月

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • CENTRALITY DEPENDENCE OF CHARM PRODUCTION FROM SINGLE ELECTRONS MEASUREMENT IN AU+ AU COLLISIONS AT S(NN)**(1/2) = 200-GEV.

      栗田 和好

      PHENIX Collaboration Phys.Rev.Lett.   6   2004年9月

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • 29pSG-10 クーロン励起法を用いた陽子過剰核 ^<46>Cr, ^<50>Fe, ^<54>Ni の B(E2) 測定 (II)(不安定核, 理論核物理)

      山田, 一成, 本林, 透, 青井, 考, 馬場, 秀忠, 出道, 仁彦, Elekes, Z, Gibelm, J, 五味, 朋子, 長谷川, 浩一, 今井, 伸明, 岩崎, 弘典, 菅野, 祥子, 久保, 敏幸, 栗田, 和好, 松山, 裕一, 道正, 新一郎, 峯村, 俊行, 野谷, 将広, 大西, 健夫, Ong, H J, 大田, 晋輔, 小沢, 顕, 齋藤, 明登, 櫻井, 博儀, 下浦, 享, 竹下, 英里, 武内, 聡, 玉城, 充, 栂野, 泰宏, 柳澤, 善行, 米田, 健一郎, 谷畑, 勇夫

      日本物理学会講演概要集59 ( 2 ) 42   2004年8月

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      記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:社団法人日本物理学会  

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    • Measurement of nonrandom event-by-event fluctuations of average transverse momentum in root S-NN=200 GeV Au+Au and p+p collisions

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, J Alexander, R Amirikas, L Aphecetche, SH Aronson, R Averbeck, TC Awes, R Azmoun, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, A Bazilevsky, S Belikov, Y Berdnikov, S Bhagavatula, JG Boissevain, H Borel, S Borenstein, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, JS Chai, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, J Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, P Constantin, DG d'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, O Drapier, A Drees, R du Rietz, A Durum, D Dutta, YV Efremenko, K El Chenawi, A Enokizono, H En'yo, S Esumi, L Ewell, DE Fields, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, G Gogiberidze, M Gonin, J Gosset, Y Goto, RG de Cassagnac, N Grau, SV Greene, MG Perdekamp, W Guryn, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, M Hibino, JC Hill, W Holzmann, K Homma, B Hong, A Hoover, T Ichihara, VV Ikonnikov, K Imai, D Isenhower, M Ishihara, M Issah, A Isupov, BV Jacak, WY Jang, Y Jeong, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, S Kametani, N Kamihara, JH Kang, SS Kapoor, K Katou, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DH Kim, DJ Kim, DW Kim, E Kim, GB Kim, HJ Kim, E Kistenev, A Kiyomichi, K Kiyoyama, C Klein-Boesing, H Kobayashi, L Kochenda, Kochetkov, V, D Koehler, T Kohama, M Kopytine, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, K Kurita, Y Kuroki, MJ Kweon, Y Kwon, GS Kyle, R Lacey, Ladygin, V, JG Lajoie, A Lebedev, S Leckey, DM Lee, S Lee, MJ Leitch, XH Li, H Lim, A Litvinenko, MX Liu, Y Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, MD Marx, H Masui, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, F Messer, Y Miake, J Milan, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, D Mukhopadhyay, M Muniruzzaman, J Murata, S Nagamiya, JL Nagle, T Nakamura, BK Nandi, M Nara, J Newby, P Nilsson, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, K Okada, M Ono, Onuchin, V, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, VS Pantuev, Papavassiliou, V, J Park, A Parmar, SF Pate, T Peitzmann, JC Peng, Peresedov, V, C Pinkenburg, RP Pisani, F Plasil, ML Purschke, AK Purwar, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, P Rosnet, SS Ryu, ME Sadler, N Saito, T Sakaguchi, M Sakai, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, MR Shaw, TK Shea, TA Shibata, K Shigaki, T Shiina, CL Silva, D Silvermyr, KS Sim, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, WE Sondheim, SP Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, P Tarjan, JD Tepe, TL Thomas, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, SK Tuli, H Tydesjo, N Tyurin, HW van Hecke, J Velkovska, M Velkovsky, L Villatte, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, FK Wohn, CL Woody, W Xie, Y Yang, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, C Zhang, S Zhou, SJ Zhou, L Zolin

      PHYSICAL REVIEW LETTERS93 ( 9 ) 92301   2004年8月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

      Event-by-event fluctuations of the average transverse momentum of produced particles near midrapidity have been measured by the PHENIX Collaboration in roots(NN)=200 GeV Au+Au, and p+p collisions at the Relativistic Heavy Ion Collider. The fluctuations are observed to be in excess of the expectation for statistically independent particle emission for all centralities. The excess fluctuations exhibit a dependence on both the centrality of the collision and on the p(T) range over which the average is calculated. Both the centrality and p(T) dependence can be well reproduced by a simulation of random particle production with the addition of contributions from hard-scattering processes.

      DOI: 10.1103/PhysRevLett.93.092301

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    • DEUTERON AND ANTIDEUTERON PRODUCTION IN AU+ AU COLLISIONS AT S(NN)**(1/2) = 200-GEV.

      栗田 和好

      PHENIX Collaboration Phys.Rev.Lett.   6   2004年6月

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • High-pT charged hadron suppression in Au+Au collisions at √SNN=200 GeV

      S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J. S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. G. d'Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En'yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H. A. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G. B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J. C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T. A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. van Hecke, J. Velkovska, M. Velkovsky, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, L. Zolin

      Physical Review C - Nuclear Physics69 ( 3 ) 1 - 34910   2004年3月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      The PHENIX experiment at the Relativistic Heavy Ion Collider has measured charged hadron yields at midrapidity over a wide range of transverse momenta (0.5&lt
      pT&lt
      10 GeV/c) in Au + Au collisions at √s NN =200 GeV. The data are compared to π0 measurements from the same experiment. For both charged hadrons and neutral pions, the yields per nucleon-nucleon collision are significantly suppressed in central compared to peripheral and nucleon-nucleon collisions. The suppression sets in gradually and increases with increasing centrality of the collisions. Above 4-5 GeV/c in pT, a constant and almost identical suppression of charged hadrons and π0's is observed. The pT spectra are compared to published spectra from Au+Au at √sNN=130 in terms of x T scaling. Central and peripheral π0 as well as peripheral charged spectra exhibit the same xT scaling as observed in p+p data.

      DOI: 10.1103/PhysRevC.69.034910

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    • Single identified hadron spectra from root s(NN)=130 GeVAu+Au collisions

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, RD Bames, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, TA Carey, P Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG d'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, JS Haggerty, H Hamagaki, AG Hansen, H Hara, EP Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, JM Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kann, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, KC Klein-Boesing, S Klinksiek, L Kochenda, Kochetkov, V, D Koehler, T Kohama, D Kotchetkov, A Kozlov, PJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, J Moss, F Muhlbacher, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Pietzman, AN Petridis, C Pinkenburg, RP Pisani, P Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riaboc, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, P Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, MA Volkov, A Vorobyov, E Vznuzdaev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou

      PHYSICAL REVIEW C69 ( 2 ) 24904   2004年2月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Transverse momentum spectra and yields of hadrons are measured by the PHENIX collaboration in Au+Au collisions at roots(NN)=130 GeV at the Relativistic Heavy Ion Collider. The time-of-flight resolution allows identification of pions to transverse momenta of 2 GeV/c and protons and antiprotons to 4 GeV/c. The yield of pions rises approximately linearly with the number of nucleons participating in the collision, while the number of kaons, protons, and antiprotons increases more rapidly. The shape of the momentum distribution changes between peripheral and central collisions. Simultaneous analysis of all the p(T) spectra indicates radial collective expansion, consistent with predictions of hydrodynamic models. Hydrodynamic analysis of the spectra shows that the expansion velocity increases with collision centrality and collision energy. This expansion boosts the particle momenta, causing the yield from soft processes to exceed that for hard to large transverse momentum, perhaps as large as 3 GeV/c.

      DOI: 10.1103/PhysRevC.69.024904

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    • J / PSI PRODUCTION IN AU AU COLLISIONS AT S(NN)**(1/2) = 200-GEV AT THE RELATIBISTIC HEAVY ION COLLIDER.

      栗田 和好

      Phys.Rev.C69:   14901   2004年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • J / PSI PRODUCTION FROM PROTON PROTON COLLISIONS AT S**(1/2) = 200-GEV.

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      Phys.Rev.Lett.92:   51802   2004年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Identified charged particle spectra and yields in Au+Au collisions at √SNN=200 GeV

      S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J. S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. G. d'Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En'yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H. A. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G. B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J. C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T. A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. vanHecke, J. Velkovska, M. Velkovsky, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, L. Zolin

      Physical Review C - Nuclear Physics69 ( 3 ) 1 - 34909   2004年

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society  

      The centrality dependence of transverse momentum distributions and yields for π±,K±, p, and p in Au +Au collisions at √sNN=200 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. We observe a clear particle mass dependence of the shapes of transverse momentum spectra in central collisions below ∼2 GeV/c in pT. Both mean transverse momenta and particle yields per participant pair increase from peripheral to midcentral and saturate at the most central collisions for all particle species. We also measure particle ratios of π-/π+, K -/K+, ̄p/p, K/π, p/π, and ̄p/π as a function of pT and collision centrality. The ratios of equal mass particle yields are independent of pT and centrality within the experimental uncertainties. In central collisions at intermediate transverse momenta ∼1.5-4.5 GeV/c, proton and antiproton yields constitute a significant fraction of the charged hadron production and show a scaling behavior different from that of pions.

      DOI: 10.1103/PhysRevC.69.034909

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    • ANOMALOUSLY HINDERED E2 STRENGTH B(E2:2(1)+ ─&iquest; 0+) IN C-16.

      栗田 和好

      Phys.Rev.Lett.92:   62501   2004年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Elliptic flow of identified hadrons in Au+Au collisions at root s(NN)=200 GeV

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, J Alexander, R Amirikas, L Aphecetche, SH Aronson, R Averbeck, TC Awes, R Azmoun, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, A Bazilevsky, S Belikov, Y Berdnikov, S Bhagavatula, JG Boissevain, H Borel, S Borenstein, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, JS Chai, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, J Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, P Constantin, DG d'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, O Drapier, A Drees, R du Rietz, A Durum, D Dutta, YV Efremenko, K El Chenawi, A Enokizono, H En'yo, S Esumi, L Ewell, DE Fields, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, G Gogiberidze, M Gonin, J Gosset, Y Goto, RG de Cassagnac, N Grau, SV Greene, M Grosse Perdekamp, W Guryn, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, M Hibino, JC Hill, W Holzmann, K Homma, B Hong, A Hoover, T Ichihara, VV Ikonnikov, K Imai, LD Isenhower, M Ishihara, M Issah, A Isupov, BV Jacak, WY Jang, Y Jeong, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, S Kametani, N Kamihara, JH Kang, SS Kapoor, K Katou, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DH Kim, DJ Kim, DW Kim, E Kim, GB Kim, HJ Kim, E Kistenev, A Kiyomichi, K Kiyoyama, C Klein-Boesing, H Kobayashi, L Kochenda, Kochetkov, V, D Koehler, T Kohama, M Kopytine, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, K Kurita, Y Kuroki, MJ Kweon, Y Kwon, GS Kyle, R Lacey, Ladygin, V, JG Lajoie, A Lebedev, S Leckey, DM Lee, S Lee, MJ Leitch, XH Li, H Lim, A Litvinenko, MX Liu, Y Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, MD Marx, H Masui, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, F Messer, Y Miake, J Milan, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, D Mukhopadhyay, M Muniruzzaman, J Murata, S Nagamiya, JL Nagle, T Nakamura, BK Nandi, M Nara, J Newby, P Nilsson, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, K Okada, M Ono, Onuchin, V, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, VS Pantuev, Papavassiliou, V, J Park, A Parmar, SF Pate, T Peitzmann, JC Peng, Peresedov, V, C Pinkenburg, RP Pisani, F Plasil, ML Purschke, A Purwar, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, P Rosnet, SS Ryu, ME Sadler, N Saito, T Sakaguchi, M Sakai, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, MR Shaw, TK Shea, TA Shibata, K Shigaki, T Shiina, CL Silva, D Silvermyr, KS Sim, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, WE Sondheim, SP Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, P Tarjan, JD Tepe, TL Thomas, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, SK Tuli, H Tydesjo, N Tyurin, HW van Hecke, J Velkovska, M Velkovsky, L Villatte, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, FK Wohn, CL Woody, W Xie, Y Yang, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, C Zhang, S Zhou, L Zolin

      PHYSICAL REVIEW LETTERS91 ( 18 ) 182301   2003年10月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      The anisotropy parameter (v(2)), the second harmonic of the azimuthal particle distribution, has been measured with the PHENIX detector in Au+Au collisions at roots(NN)=200 GeV for identified and inclusive charged particle production at central rapidities (\eta\&lt;0.35) with respect to the reaction plane defined at high rapidities (\eta\=3-4 ). We observe that the v(2) of mesons falls below that of (anti)baryons for p(T)&gt;2 GeV/c, in marked contrast to the predictions of a hydrodynamical model. A quark-coalescence model is also investigated.

      DOI: 10.1103/PhysRevLett.91.182301

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    • Scaling properties of proton and antiproton production in root s(NN)=200 GeV Au+Au collisions

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, J Alexander, R Amirikas, L Aphecetche, SH Aronson, R Averbeck, TC Awes, R Azmoun, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, A Bazilevsky, S Belikov, Y Berdnikov, S Bhagavatula, JG Boissevain, H Borel, S Borenstein, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, JS Chai, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, J Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, P Constantin, DG d'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, O Drapier, A Drees, R du Rietz, A Durum, D Dutta, YV Efremenko, K El Chenawi, A Enokizono, H En'yo, S Esumi, L Ewell, DE Fields, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, G Gogiberidze, M Gonin, J Gosset, Y Goto, RG de Cassagnac, N Grau, SV Greene, G Grosse Perdekamp, W Guryn, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, M Hibino, JC Hill, W Holzmann, K Homma, B Hong, A Hoover, T Ichihara, VV Ikonnikov, K Imai, LD Isenhower, M Ishihara, M Issah, A Isupov, BV Jacak, WY Jang, Y Jeong, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, S Kametani, N Kamihara, JH Kang, SS Kapoor, K Katou, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DH Kim, DJ Kim, DW Kim, E Kim, GB Kim, HJ Kim, E Kistenev, A Kiyomichi, K Kiyoyama, C Klein-Boesing, H Kobayashi, L Kochenda, Kochetkov, V, D Koehler, T Kohama, M Kopytine, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, K Kurita, Y Kuroki, MJ Kweon, Y Kwon, GS Kyle, R Lacey, Ladygin, V, JG Lajoie, A Lebedev, S Leckey, DM Lee, S Lee, MJ Leitch, XH Li, H Lim, A Litvinenko, MX Liu, Y Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, MD Marx, H Masui, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, F Messer, Y Miake, J Milan, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, D Mukhopadhyay, M Muniruzzaman, J Murata, S Nagamiya, JL Nagle, T Nakamura, BK Nandi, M Nara, J Newby, P Nilsson, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, K Okada, M Ono, Onuchin, V, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, VS Pantuev, Papavassiliou, V, J Park, A Parmar, SF Pate, T Peitzmann, JC Peng, Peresedov, V, C Pinkenburg, RP Pisani, F Plasil, ML Purschke, A Purwar, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, P Rosnet, SS Ryu, ME Sadler, N Saito, T Sakaguchi, M Sakai, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, MR Shaw, TK Shea, TA Shibata, K Shigaki, T Shiina, CL Silva, D Silvermyr, KS Sim, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, WE Sondheim, SP Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, P Tarjan, JD Tepe, TL Thomas, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, SK Tuli, H Tydesjo, N Tyurin, HW van Hecke, J Velkovska, M Velkovsky, L Villatte, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, FK Wohn, CL Woody, W Xie, Y Yang, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, C Zhang, S Zhou, L Zolin

      PHYSICAL REVIEW LETTERS91 ( 17 ) 172301   2003年10月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      We report on the yield of protons and antiprotons, as a function of centrality and transverse momentum, in Au+Au collisions at rootS(NN)=200 GeV measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider. In central collisions at intermediate transverse momenta (1.5&lt;p(T)&lt;4.5 GeV/c) a significant fraction of all produced particles are protons and antiprotons. They show a centrality-scaling behavior different from that of pions. The (p) over bar/pi and p/pi ratios are enhanced compared to peripheral Au+Au, p+p, and e(+)e(-) collisions. This enhancement is limited to p(T)&lt;5 GeV/c as deduced from the ratio of charged hadrons to pi(0) measured in the range 1.5&lt;p(T)&lt;9 GeV/c.

      DOI: 10.1103/PhysRevLett.91.172301

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    • Further observations on midrapidity E-T distributions with aperture corrected scale

      T Abbott, L Ahle, Y Akiba, D Alburger, D Beavis, L Birstein, MA Bloomer, PD Bond, HC Britt, B Budick, C Chasman, Z Chen, CY Chi, YY Chu, Cianciolo, V, BA Cole, JB Costales, HJ Crawford, JB Cumming, R Debbe, E Duek, J Engelage, SY Fung, M Gonin, L Grodzins, S Gushue, H Hamagaki, O Hansen, RS Hayano, S Hayashi, S Homma, HZ Huang, Y Ikeda, Juricic, I, H Kaneko, J Kang, S Katcoff, S Kaufman, WL Kehoe, K Kimura, K Kitamura, K Kurita, RJ Ledoux, MJ LeVine, Y Miake, DP Morrison, RJ Morse, B Moskowitz, S Nagamiya, MN Namboodiri, TK Nayak, J Olness, CG Parsons, LP Remsberg, P Rothschild, H Sakurai, TC Sangster, M Sarabura, R Seto, K Shigaki, A Shor, R Soltz, P Stankus, SG Steadman, GSF Stephans, T Sugitate, T Sung, M Tanaka, MJ Tannenbaum, J Thomas, S Tonse, M Torikoshi, S Ueno-Hayashi, JH van Dijk, F Videbaek, M Vient, P Vincent, O Vossnack, E Vulgaris, Vutsadakis, V, FQ Wang, Y Wang, WA Watson, HE Wegner, DS Woodruff, YD Wu, K Yagi, Yang, X, D Zachary, WA Zajc

      PHYSICAL REVIEW C68 ( 3 ) 34908   2003年9月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      In a previous publication [T. Abbott , E802 Collaboration, Phys. Rev. C 63, 064602 (2001); 64, 029901(E) (2001)], measurements of the A dependence and pseudorapidity interval (deltaeta) dependence of midrapidity E-T distributions in a half-azimuth (Deltaphi=pi) electromagnetic calorimeter were presented for p+Be, p+Au, O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS. The validity of the "nuclear geometry" characterization versus deltaeta was illustrated by plots of the E-T(deltaeta) distribution in each deltaeta interval in units of the measured &lt;E-T(deltaeta)&gt;(p+Au) in the same deltaeta interval for p+Au collisions. These plots, with aperture corrected scale in the physically meaningful units of number of average observed p+Au collisions, were nearly universal as a function of deltaeta, confirming that the reaction dynamics for E-T production at midrapidity at AGS energies is governed by the number of projectile participants and can be well characterized by measurements in apertures as small as Deltaphi=pi,deltaeta=0.3. A key ingredient in these analyses is the probability p(0) for no signal to be detected in a given aperture deltaeta for the fundamental p+Au collision. In fact the measured &lt;E-T(deltaeta)&gt;(p+Au) is biased and the true &lt;E-T(deltaeta)&gt;(true)(p+Au) for the detector aperture is the measured value times 1-p(0). The issues and merits of measuring the E-T(deltaeta) distribution in units of &lt;E-T(deltaeta)&gt;(p+Au) or &lt;E-T(deltaeta)&gt;(true)(p+Au) in the same deltaeta interval are presented and discussed. This method has application at RHIC, where p-p data could be used as the reference distribution for two participants. The E-T distributions for B+A collisions, with E-T(deltaeta) scale normalized by &lt;E-T(deltaeta)&gt;(true)(p-p) in the same aperture for p-p collisions, would then be given directly in the popular unit "per participant-pair" [K. Adcox , PHENIX Collaboration, Phys. Rev. Lett. 86, 3500 (2001); I. G. Bearden , BRAHMS Collaboration, Phys. Lett. B523, 227 (2001); B. B. Back , PHOBOS Collaboration, Phys. Rev. C 65, 031901(R) (2002); C. Adler , STAR Collaboration, Phys. Rev. Lett. 89, 202301 (2002)].

      DOI: 10.1103/PhysRevC.68.034908

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    • Suppressed pi(0) production at large transverse momentum in central Au plus Au collisions at root s(NN)=200 GeV

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, J Alexander, R Amirikas, L Aphecetche, SH Aronson, R Averbeck, TC Awes, R Azmoun, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, A Bazilevsky, S Belikov, Y Berdnikov, S Bhagavatula, JG Boissevain, H Borel, S Borenstein, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, JS Chai, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, J Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, P Constantin, DG d'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, O Drapier, A Drees, KA Drees, R du Rietz, A Durum, D Dutta, YV Efremenko, K El Chenawi, A Enokizono, H En'yo, S Esumi, L Ewell, DE Fields, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, G Gogiberidze, M Gonin, J Gosset, Y Goto, RG de Cassagnac, N Grau, SV Greene, MG Perdekamp, W Guryn, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, M Hibino, JC Hill, W Holzmann, K Homma, B Hong, A Hoover, T Ichihara, VV Ikonnikov, K Imai, L Isenhower, M Ishihara, M Issah, A Isupov, BV Jacak, WY Jang, Y Jeong, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, S Kametani, N Kamihara, JH Kang, SS Kapoor, K Katou, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DH Kim, DJ Kim, DW Kim, E Kim, GB Kim, HJ Kim, E Kistenev, A Kiyomichi, K Kiyoyama, C Klein-Boesing, H Kobayashi, L Kochenda, Kochetkov, V, D Koehler, T Kohama, M Kopytine, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, K Kurita, Y Kuroki, MJ Kweon, Y Kwon, GS Kyle, R Lacey, Ladygin, V, JG Lajoie, A Lebedev, S Leckey, DM Lee, S Lee, MJ Leitch, XH Li, H Lim, A Litvinenko, MX Liu, Y Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, MD Marx, H Masui, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, F Messer, Y Miake, J Milan, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, D Mukhopadhyay, M Muniruzzaman, J Murata, S Nagamiya, JL Nagle, T Nakamura, BK Nandi, M Nara, J Newby, P Nilsson, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, K Okada, M Ono, Onuchin, V, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, VS Pantuev, Papavassiliou, V, J Park, A Parmar, SF Pate, T Peitzmann, JC Peng, Peresedov, V, C Pinkenburg, RP Pisani, F Plasil, ML Purschke, AK Purwar, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, P Rosnet, SS Ryu, ME Sadler, N Saito, T Sakaguchi, M Sakai, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, MR Shaw, TK Shea, TA Shibata, K Shigaki, T Shiina, CL Silva, D Silvermyr, KS Sim, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, WE Sondheim, SP Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, P Tarjan, JD Tepe, TL Thomas, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, SK Tuli, H Tydesjo, N Tyurin, HW van Hecke, J Velkovska, M Velkovsky, L Villatte, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, FK Wohn, CL Woody, W Xie, Y Yang, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, C Zhang, S Zhou, L Zolin

      PHYSICAL REVIEW LETTERS91 ( 7 ) 72301   2003年8月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Transverse momentum spectra of neutral pions in the range 1&lt;p(T)&lt;10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au+Au collisions at roots(NN)=200 GeV. The pi(0) multiplicity in central reactions is significantly below the yields measured at the same roots(NN) in peripheral Au+Au and p+p reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the suppression factor is similar to2.5 at p(T)=2 GeV/c and increases to similar to4-5 at p(T)approximate to4 GeV/c. At larger p(T), the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.

      DOI: 10.1103/PhysRevLett.91.072301

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    • Absence of suppression in particle production at large transverse momentum in root s(NN)=200 GeV d+Au collisions

      SS Adler, S Afanasiev, C Aidala, NN Ajitanand, Y Akiba, A Al-Jamel, J Alexander, K Aoki, L Aphecetche, R Armendariz, SH Aronson, R Averbeck, TC Awes, Babintsev, V, A Baldisseri, KN Barish, PD Barnes, B Bassalleck, S Bathe, S Batsouli, Baublis, V, F Bauer, A Bazilevsky, S Belikov, MT Bjorndal, JG Boissevain, H Borel, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, JM Burward-Hoy, S Butsyk, Camard, X, P Chand, WC Chang, S Chernichenko, CY Chi, J Chiba, M Chiu, IJ Choi, RK Choudhury, T Chujo, Cianciolo, V, Y Cobigo, BA Cole, MP Comets, P Constantin, M Csanad, T Csorgo, JP Cussonneau, D d'Enterria, K Das, G David, F Deak, H Delagrange, A Denisov, A Deshpande, EJ Desmond, A Devismes, O Dietzsch, JL Drachenberg, O Drapier, A Drees, A Durum, D Dutta, Dzhordzhadze, V, YV Efremenko, H En'yo, B Espagnon, S Esumi, DE Fields, C Finck, F Fleuret, SL Fokin, BD Fox, Z Fraenkel, JE Frantz, A Franz, AD Frawley, Y Fukao, SY Fung, S Gadrat, M Germain, A Glenn, M Gonin, J Gosset, Y Goto, RG de Cassagnac, N Grau, SV Greene, MG Perdekamp, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, EP Hartouni, M Harvey, K Hasuko, R Hayano, He, X, M Heffner, TK Hemmick, JM Heuser, P Hidas, H Hiejima, JC Hill, R Hobbs, W Holzmann, K Homma, B Hong, A Hoover, T Horaguchi, T Ichihara, VV Ikonnikov, K Imai, M Inuzuka, D Isenhower, L Isenhower, M Issah, A Isupov, BV Jacak, J Jia, O Jinnouchi, BM Johnson, SC Johnson, KS Joo, D Jouan, F Kajihara, S Kametani, N Kamihara, M Kaneta, JH Kang, K Katou, T Kawabata, A Kazantsev, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, E Kim, GB Kim, HJ Kim, E Kinney, A Kiss, E Kistenev, A Kiyomichi, C Klein-Boesing, H Kobayashi, Kochetkov, V, R Kohara, B Komkov, M Konno, D Kotchetkov, A Kozlov, PJ Kroon, CH Kuberg, GJ Kunde, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, Y Le Bornec, A Lebedev, S Leckey, DM Lee, MJ Leitch, MAL Leite, Li, X, XH Li, H Lim, A Litvinenko, MX Liu, CF Maguire, YI Makdisi, A Malakhov, Manko, VI, Y Mao, G Martinez, H Masui, F Matathias, T Matsumoto, MC McCain, PL McGaughey, Y Miake, TE Miller, A Milov, S Mioduszewski, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, D Mukhopadhyay, M Muniruzzaman, S Nagamiya, JL Nagle, T Nakamura, J Newby, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, H Okada, K Okada, A Oskarsson, Otterlund, I, K Oyama, K Ozawa, D Pal, APT Palounek, Pantuev, V, Papavassiliou, V, J Park, WJ Park, SF Pate, H Pei, Penev, V, JC Peng, H Pereira, Peresedov, V, A Pierson, C Pinkenburg, RP Pisani, ML Purschke, AK Purwar, J Qualls, J Rak, Ravinovich, I, KF Read, M Reuter, K Reygers, Riabov, V, Y Riabov, G Roche, A Romana, M Rosati, S Rosendahl, P Rosnet, VL Rykov, SS Ryu, N Saito, T Sakaguchi, S Sakai, Samsonov, V, L Sanfratello, R Santo, HD Sato, S Sato, S Sawada, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, M Shimomura, A Sickles, CL Silva, D Silvermyr, KS Sim, A Soldatov, RA Soltz, WE Sondheim, S Sorensen, Sourikova, IV, F Staley, PW Stankus, E Stenlund, M Stepanov, A Ster, SP Stoll, T Sugitate, JP Sullivan, S Takagi, EM Takagui, A Taketani, KH Tanaka, Y Tanaka, K Tanida, MJ Tannenbaum, A Taranenko, P Tarjan, TL Thomas, M Togawa, J Tojo, H Torii, RS Towell, VN Tram, Tserruya, I, Y Tsuchimoto, H Tydesjo, N Tyurin, TJ Uam, HW van Hecke, J Velkovska, M Velkovsky, Veszpremi, V, AA Vinogradov, MA Volkov, E Vznuzdaev, XR Wang, Y Watanabe, SN White, N Willis, FK Wohn, CL Woody, W Xie, A Yanovich, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, C Zhang, S Zhou, J Zimanyi, L Zolin, Zong, X

      PHYSICAL REVIEW LETTERS91 ( 7 ) 72303   2003年8月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Transverse momentum spectra of charged hadrons with p(T)&lt;8 GeV/c and neutral pions with p(T)&lt;10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in d+Au collisions at roots(NN)=200 GeV. The measured yields are compared to those in p+p collisions at the same roots(NN) scaled up by the number of underlying nucleon-nucleon collisions in d+Au. The yield ratio does not show the suppression observed in central Au+Au collisions at RHIC. Instead, there is a small enhancement in the yield of high momentum particles.

      DOI: 10.1103/PhysRevLett.91.072303

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    • Centrality dependence of the high (PT) charged hadron suppression in Au+Au collisions at root s(NN)=130 GeV

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, PD Barnes, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, S Butsyk, TA Carey, P Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG D'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, JS Haggerty, H Hamagaki, AG Hansen, H Kara, EP Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, JM Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kann, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kochenda, Kochetkov, V, D Koehler, T Kohama, D Kotchetkov, A Kozlov, PJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, M Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, AN Petridis, C Pinkenburg, RP Pisani, P Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riabov, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Ssingh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, P Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, AM Volkov, A Vorobyov, E Vznuzdaev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou

      PHYSICS LETTERS B561 ( 1-2 ) 82 - 92   2003年5月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

      PHENIX has measured the centrality dependence of charged hadron p(T) spectra from Au +An collisions at root(s)NN = 130 GeV The truncated mean p(T) decreases with centrality for p(T) &gt; 2 GeV/c, indicating an apparent reduction of the contribution from hard scattering to high p(T) hadrdn production. For central collisions the yield at high p(T) is shown to be suppressed compared to binary nucleon-nucleon collision scaling of p + p, data. This suppression is monotonically increasing with centrality, but most of the change occurs below 30% centrality, i.e., for collisions with less than similar to140 participating nucleons. The observed p(T) and centrality dependence is consistent with the particle production predicted by models including hard scattering and subsequent energy loss of the scattered partons in the dense matter created in the collisions. (C) 2003 Published by Elsevier Science B.V.

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    • PHENIX detector overview

      K Adcox, SS Adler, M Aizama, NN Ajitanand, Y Akiba, H Akikawa, J Alexander, A Al-Jamel, M Allen, G Alley, R Amirikas, L Aphecetche, Y Arai, JB Archuleta, Archuleta, JR, R Armendariz, Armijo, V, SH Aronson, D Autrey, R Averbeck, TC Awes, B Azmoun, A Baldisseri, J Banning, KN Barish, AB Barker, PD Barnes, J Barrette, F Barta, B Bassalleck, S Bathe, S Batsouli, VV Baublis, A Bazilevsky, R Begay, J Behrendt, S Belikov, R Belkin, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Bhaganatula, JC Biggs, AW Bland, C Blume, M Bobrek, JG Boissevain, S Boose, H Borel, D Borland, E Bosze, S Botelho, J Bowers, C Britton, L Britton, ML Brooks, AW Brown, DS Brown, N Bruner, WL Bryan, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, SA Butsyk, MM Cafferty, TA Carey, JS Chai, P Chand, J Chang, WC Chang, RB Chappell, LL Chavez, S Chernichenko, CY Chiu, J Chiba, M Chiu, S Chollet, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, DJ Clark, Y Cobigo, BA Cole, P Constantin, R Conway, KC Cook, DW Crook, H Cunitz, R Cunningham, M Cutshaw, DG D'Enterria, CM Dabrowski, G Danby, S Daniels, A Danmura, G David, A Debraine, H Delagrange, J DeMoss, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, JL Drachenberg, O Drapier, A Drees, R du Rietz, A Durum, D Dutta, K Ebisu, MA Echave, YV Efremenko, K El Chenawi, MS Emery, D Engo, A Enokizono, K Enosawa, H En'yo, N Ericson, S Esumi, VA Evseev, L Ewell, O Fackler, J Fellenstein, T Ferdousi, J Ferrierra, DE Fields, F Fleuret, SL Fokin, B Fox, Z Fraenkel, S Frank, A Franz, JE Frantz, AD Frawley, J Fried, JP Freidberg, E Fujisawa, H Funahashi, SY Fung, S Gadrat, J Gannon, S Garpman, F Gastaldi, TF Gee, R Gentry, TK Ghosh, P Giannotti, A Glenn, AL Godoi, M Gonin, G Gogiberidze, J Gosset, Y Goto, RG de Cassagnac, SV Greene, Griffin, V, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, T Hachiya, JS Haggerty, S Hahn, J Halliwell, H Hamagaki, RH Hance, AG Hansen, H Hara, J Harder, GW Hart, EP Hartouni, A Harvey, L Hawkins, RS Hayano, H Hayashi, N Hayashi, He, X, N Heine, F Heistermann, S Held, TK Hemmick, JM Heuser, M Hibino, JS Hicks, R Higuchi, JC Hill, T Hirano, DS Ho, R Hoade, W Holzmann, K Homma, B Hong, A Hoover, T Honaguchi, CT Hunter, DE Hurst, R Hutter, T Ichihara, VV Ikonnikov, K Imai, M Inaba, MS Ippolitov, LD Isenhower, LD Isenhower, M Ishihara, M Issah, Ivanov, VI, BV Jacak, G Jackson, J Jackson, D Jaffe, U Jagadish, WY Jang, R Jayakumar, J Jia, BM Johnson, J Johnson, SC Johnson, JP Jones, K Jones, KS Joo, D Jouan, S Kahn, F Kajihara, S Kametani, N Kamihara, Y Kamyshkov, A Kandasamy, JH Kang, MR Kann, SS Kapoor, J Kapustinsky, KV Karadjev, Kashikhin, V, S Kato, K Katou, HJ Kehayias, MA Kelley, S Kelly, M Kennedy, B Khachaturov, AV Khanzadeev, A Khomutnikov, J Kikuchi, DJ Kim, DW Kim, GB Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kluberg, H Kobayashi, Kochetkov, V, D Koehler, T Kohama, BG Komkov, ML Kopytine, K Koseki, L Kotchenda, D Kotchetkov, IA Koutcheryaev, A Kozlov, VS Kozlov, PA Kravtsov, PJ Kroon, CH Kuberg, LG Kudin, M Kurata-Nishimura, VV Kuriatkov, K Kurita, Y Kuroki, MJ Kweon, Y Kwon, GS Kyle, JJ LaBounty, R Lacey, JG Lajoie, J Lauret, A Lebedev, VA Lebedev, VD Lebedev, DM Lee, S Lee, M Leitch, M Lenz, W Lenz, XH Li, Z Li, B Libby, M Libkind, W Liccardi, DJ Lim, S Lin, MX Liu, Liu, X, Y Liu, Z Liu, E Lockner, N Longbotham, JD Lopez, R Machnowski, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, S Marino, SK Mark, S Markacs, DG Markushin, G Martinez, XB Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, MC McCain, J Mead, E Melnikov, Y Melnikov, WZ Meng, M Merschmeyer, F Messer, M Messer, Y Miake, NM Miftakhov, S Migluolio, J Milan, TE Miller, A Milov, K Minuzzo, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, Y Miyamoto, AK Mohanty, BC Montoya, A Moore, T Moore, DP Morrison, GG Moscone, JM Moss, F Muhlbacher, M Muniruzzaman, J Murata, MM Murray, M Musrock, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, T Nakamura, BK Nandi, J Negrin, J Newby, L Nikkinen, SA Nikolaev, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, P O'Conner, F Obenshain, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, CE Pancake, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, R Petersen, AN Petridis, CH Pinkenburg, RP Pisani, P Pitukhin, T Plagge, F Plasil, M Pollack, K Pope, R Prigl, ML Purschke, AK Purwar, JM Qualls, S Rankowitz, G Rao, R Rao, M Rau, Ravinovich, I, R Raynis, KF Read, K Reygers, G Riabov, VG Riabov, YG Riabov, SH Robinson, G Roche, A Romana, M Rosati, EV Roschin, AA Rose, P Rosnet, R Roth, R Ruggiero, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, S Sakai, H Sako, T Sakuma, S Salomone, VM Samsonov, WF Sandhoff, L Sanfratello, TC Sangster, R Santo, HD Sato, S Sato, R Savino, S Sawada, BR Schlei, R Schleuter, Y Schutz, M Sekimoto, Semenov, V, R Seto, Y Severgin, A Shajii, Shangin, V, MR Shaw, TK Shea, Shein, I, Shelikhov, V, TA Shibata, K Shigaki, T Shiina, T Shimada, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, M Simpson, CP Singh, Singh, V, W Sippach, M Sivertz, HD Skank, S Skutnik, GA Sleege, DC Smith, GD Smith, M Smith, A Soldatov, GP Solodov, RA Soltz, WE Sondheim, S Sorensen, Sourikova, I, F Staley, PW Stankus, N Starinsky, S Steffens, EM Stein, P Steinberg, E Stenlund, M Stepanov, A Ster, J Stewering, W Stokes, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki-Nara, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, Tarakanov, VI, OP Tarasenkova, JD Tepe, R Thern, JH Thomas, JL Thomas, TL Thomas, WD Thomas, GW Thornton, W Tian, R Todd, J Tojo, F Toldo, H Torii, RS Towell, J Tradeski, VA Trofimov, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tulli, G Turner, H Tydesjo, N Tyurin, S Urasawa, A Usachev, T Ushiroda, HW van Hecke, M Van Lith, AA Vasiliev, Vasiliev, V, M Vassent, C Velissaris, J Velkovska, M Velkovsky, W Verhoeven, L Villatte, AA Vinogradov, Vishnevskii, VI, MA Volkov, W Von Achen, AA Vorobyov, EA Vznuzdaev, M Vznuzdaev, JW Walker, Y Wan, HQ Wang, S Wang, Y Watanabe, LC Watkins, T Weimer, SN White, BR Whitus, C Williams, PS Willis, AL Wintenberg, C Witzig, FK Wohn, K Wolniewicz, BG Wong-Swanson, L Wood, CL Woody, LW Wright, J Wu, W Xie, N Xu, K Yagi, R Yamamoto, Y Yang, S Yokkaichi, Y Yokota, S Yoneyama, GR Young, IE Yushmanov, WA Zajc, C Zhang, L Zhang, Z Zhang, S Zhou

      NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT499 ( 2-3 ) 469 - 479   2003年3月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER  

      The PHENIX detector is designed to perform a broad study of A-A, p-A, and p-p collisions to investigate nuclear matter under extreme conditions. A wide variety of probes, sensitive to all timescales, are used to study systematic variations with species and energy as well as to measure the spin structure of the nucleon. Designing for the needs of the heavy-ion and polarized-proton programs has produced a detector with unparalleled capabilities. PHENIX measures electron and muon pairs, photons, and hadrons with excellent energy and momentum resolution. The detector consists of a large number of subsystems that are discussed in other papers in this volume. The overall design parameters of the detector are presented. (C) 2002 Elsevier Science B.V. All rights reserved.

      DOI: 10.1016/S0168-9002(02)01950-2

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    • PHENIX Muon Arms

      H Akikawa, A Al-Jamel, JB Archuleta, Archuleta, JR, R Armendariz, Armijo, V, TC Awes, A Baldisseri, AB Barker, PD Barnes, B Bassalleck, S Batsouli, J Behrendt, FG Bellaiche, AW Bland, M Bobrek, JG Boissevain, H Borel, ML Brooks, AW Brown, DS Brown, N Bruner, MM Cafferty, TA Carey, JS Chai, LL Chavez, S Chollet, RK Choudhury, MS Chung, Cianciolo, V, DJ Clark, Y Cobigo, CM Dabrowski, A Debraine, J DeMoss, BV Dinesh, JL Drachenberg, O Drapier, MA Echave, YV Efremenko, H En'yo, DE Fields, F Fleuret, J Fried, E Fujisawa, H Funahashi, S Gadrat, F Gastaldi, TF Gee, A Glenn, G Gogiberidze, M Gonin, J Gosset, Y Goto, RG de Cassagnac, RH Hance, GW Hart, N Hayashi, S Held, JS Hicks, JC Hill, R Hoade, B Hong, A Hoover, T Horaguchi, CT Hunter, DE Hurst, T Ichihara, K Imai, LD Isenhower, LD Isenhower, M Ishihara, WY Jang, J Johnson, D Jouan, N Kamihara, Y Kamyshkov, JH Kang, SS Kapoor, DJ Kim, DW Kim, GB Kim, WW Kinnison, S Klinksiek, L Kluberg, H Kobayashi, D Koehler, L Kotchenda, CH Kuberg, K Kurita, MJ Kweon, Y Kwon, GS Kyle, JJ LaBounty, JG Lajoie, DM Lee, S Lee, M Leitch, Z Li, MX Liu, Liu, X, Y Liu, E Lockner, JD Lopez, Y Mao, XB Martinez, MC McCain, PL McGaughey, S Mioduszewski, RE Mischke, AK Mohanty, BC Montoya, JM Moss, J Murata, MM Murray, JL Nagle, Y Nakada, J Newby, F Obenshain, APT Palounek, Papavassiliou, V, SF Pate, F Plasil, K Pope, JM Qualls, G Rao, KF Read, SH Robinson, G Roche, A Romana, P Rosnet, R Roth, N Saito, T Sakuma, WF Sandhoff, L Sanfratello, HD Sato, R Savino, M Sekimoto, MR Shaw, TA Shibata, KS Sim, HD Skank, DE Smith, GD Smith, WE Sondheim, S Sorensen, F Staley, PW Stankus, S Steffens, EM Stein, M Stepanov, W Stokes, M Sugioka, Z Sun, A Taketani, E Taniguchi, JD Tepe, GW Thornton, W Tian, J Tojo, H Torii, RS Towell, J Tradeski, M Vassent, C Velissaris, L Villatte, Y Wan, Y Watanabe, LC Watkins, BR Whitus, C Williams, PS Willis, BG Wong-Swanson, Y Yang, S Yoneyama, GR Young, S Zhou

      NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT499 ( 2-3 ) 537 - 548   2003年3月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

      The PHENIX Muon Arms detect muons at rapidities of \y\ = (1.2-2.4) with full azimuthal acceptance. Each muon arm must track and identify muons and provide good rejection of pions and kaons (similar to 10(-3)). In order to accomplish this we employ a radial field magnetic spectrometer with precision tracking (Muon Tracker) followed by a stack of absorber/low resolution tracking layers (Muon Identifier). The design, construction, testing and expected run parameters of both the muon tracker and the muon identifier are described. (C) 2002 Elsevier Science B.V. All rights reserved.

      DOI: 10.1016/S0168-9002(02)01955-1

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    • 29pSA-5 / 陽子非弾性散乱による ^<30>Na のγ線分光

      長谷川 浩一, 本林 透, 國分 誠, 柳沢 善行, 中村 隆司, 野谷 将広, 五味 朋子, 杉本 崇, 馬場 秀忠, 齋藤 明登, 溝井 浩, 菅野 祥子, 栗田 和好, 岩崎 弘典, 武内 聡, 竹下 英里, 出道 仁彦, 道正 新一郎, 上 浩二, 福田 直樹, 岩佐 直仁, 黒川 明子, 下浦 享, 櫻井 博儀, 石原 正泰

      日本物理学会講演概要集58.1.1   45   2003年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.58.1.1.0_45_4

      CiNii Article

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    • RHIC pC CNI polarimeter: Status and performance from the first collider run

      O Jinnouchi, IG Alekseev, LC Bland, A Bravar, G Bunce, R Cadman, A Deshpande, S Dhawan, DE Fields, H Huang, Hughes, V, G Igo, K Imai, VP Kanavets, J Kiryluk, K Kurita, Z Li, W Lozowski, WW MacKay, Y Makdisi, A Ogawa, S Rescia, T Roser, N Saito, H Spinka, B Surrow, DN Svirida, J Tojo, D Underwood, J Wood

      SPIN 2002675   817 - 825   2003年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

      Polarimeters using the proton carbon elastic scattering process in Coulomb Nuclear Interference (CNI) region were installed in two RHIC rings. Polarization measurements were successfully carried out with the high energy polarized proton beams for the first polarized pp collision run. The physics principles, performance, and polarization measurements are presented.

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    • POLARIZED PROTON COLLIDER AT RHIC.

      栗田 和好

      Nucl.Instrum.Meth.A499:   392 - 414   2003年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • PHENIX CENTRAL ARM PARTICLE ID DETECTORS.

      栗田 和好

      PHENIX Collaboration Nucl.Instrum.Meth.A499:   508 - 520   2003年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • PHENIX ON-LINE SYSTEMS.

      栗田 和好

      PHENIX Collaboration Nucl.Instrum.Meth.A499:   560 - 592   2003年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • MID-RAPIDITY NEUTRAL PION PRODUCTION IN PROTON PROTON COLLISIONS AT S**(1/2) = 200-GEV.

      栗田 和好

      Phys.Rev.Lett.91:   241803   2003年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • System, centrality, and transverse mass dependence of two-pion correlation radii in heavy ion collisions at 11.6A and 14.6A GeV/c

      L Ahle, Y Akiba, K Ashktorab, MD Baker, D Beavis, P Beery, HC Britt, B Budick, J Chang, C Chasman, Z Chen, CY Chi, YY Chu, Cianciolo, V, BA Cole, JB Costales, HJ Crawford, JB Cumming, R Debbe, JC Dunlop, W Eldredge, J Engelage, SY Fung, E Garcia, M Gonin, S Gushue, H Hamagaki, LF Hansen, RS Hayano, S Hayashi, G Heintzelman, S Homma, E Judd, H Kaneko, J Kang, S Kaufman, WL Kehoe, EJ Kim, A Kumagai, K Kurita, RJ Ledoux, JH Lee, MJ LeVine, J Luke, Y Miake, A Mignerey, DP Morrison, RJ Morse, B Moskowitz, M Moulson, C Muntz, S Nagamiya, MN Namboodiri, TK Nayak, CA Ogilvie, J Olness, CG Parsons, LP Remsberg, D Roehrich, P Rothschild, H Sako, H Sakurai, TC Sangster, R Seto, J Shea, K Shigaki, RA Soltz, P Stankus, SG Steadman, GSF Stephans, TW Sung, Y Tanaka, MJ Tannenbaum, JH Thomas, Tonse, SR, S Ueno-Hayashi, JH van Dijk, F Videbaek, O Vossnack, Vutsadakis, V, F Wang, Y Wang, HE Wegner, D Woodruff, Y Wu, H Xiang, GH Xu, K Yagi, Yang, X, H Yao, D Zachary, WA Zajc, F Zhu

      PHYSICAL REVIEW C66 ( 5 ) 54906   2002年11月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

      Two-pion correlation functions are analyzed at midrapidity for three systems (14.6A GeV/c Si+Al, Si+Au, and 11.6A GeV/c Au+Au), seven distinct centrality conditions, and different k(T) bins in the range 0.1-0.5 GeV/c. Source reference frames are determined from fits to the Yano-Koonin source parametrization. Bertsch-Pratt radius parameters are shown to scale linearly with both number of projectile and total participants as obtained from a Glauber model calculation. A finite lifetime parameter that increases linearly with system/centrality is also reported. The m(T) dependences of the Bertsch-Pratt radii for the central Si+Au and central Au+Au systems differ only by an overall normalization factor given by the measured system/centrality dependence.

      DOI: 10.1103/PhysRevC.66.054906

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    • Flow measurements via two-particle azimuthal correlations in Au plus Au collisions at root S-NN=130 GeV

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, PD Barnes, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, S Butsyk, TA Carey, P Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG D'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, JS Haggerty, H Hamagaki, AG Hansen, H Hara, EP Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, JM Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kann, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kochenda, Kochetkov, V, D Koehler, T Kohama, D Kotchetkov, A Kozlov, PJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, M Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, AN Petridis, C Pinkenburg, RP Pisani, P Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riabov, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, P Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, MA Volkov, A Vorobyov, E Vznuzdaev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou

      PHYSICAL REVIEW LETTERS89 ( 21 ) 212301   2002年11月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Two-particle azimuthal correlation functions are presented for charged hadrons produced in Au + Au collisions at the Relativistic Heavy Ion Collider (roots(NN) = 130 GeV). The measurements permit determination of elliptic flow without event-by-event estimation of the reaction plane. The extracted elliptic flow values (upsilon(2)) show significant sensitivity to both the collision centrality and the transverse momenta of emitted hadrons, suggesting rapid thermalization and relatively strong velocity fields. When scaled by the eccentricity of the collision zone epsilon, the scaled elliptic flow shows little or no dependence on centrality for charged hadrons with relatively low p(T). A breakdown of this epsilon scaling is observed for charged hadrons with p(T) &gt; 1.0 GeV/c.

      DOI: 10.1103/PhysRevLett.89.212301

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    • Net charge fluctuations in Au + Au interactions at √SNN = 130 GeV

      K. Adcox, S. S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, L. Aphecetche, Y. Arai, S. H. Aronson, R. Averbeck, T. C. Awes, K. N. Barish, P. D. Barnes, J. Barrette, B. Bassalleck, S. Bathe, V. Baublis, A. Bazilevsky, S. Belikov, F. G. Bellaiche, S. T. Belyaev, M. J. Bennett, Y. Berdnikov, S. Botelho, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. Burward-Hoy, S. Butsyk, T. A. Carey, P. Chand, J. Chang, W. C. Chang, L. L. Chavez, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, R. K. Choudhury, T. Christ, T. Chujo, M. S. Chung, P. Chung, V. Cianciolo, B. A. Cole, D. G. D'Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, B. V. Dinesh, A. Drees, A. Durum, D. Dutta, K. Ebisu, Y. V. Efremenko, K. El Chenawi, H. En'yo, S. Esumi, L. Ewell, T. Ferdousi, D. E. Fields, S. L. Fokin, Z. Fraenkel, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, A. L. Godoi, Y. Goto, S. V. Greene, M. Grosse Perdekamp, S. K. Gupta, W. Guryn, H. A. Gustafsson, J. S. Haggerty, H. Hamagaki, A. G. Hansen, H. Hara, E. P. Hartouni, R. Hayano, N. Hayashi, X. He, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, D. S. Ho, K. Homma, B. Hong, A. Hoover, T. Ichihara, K. Imai, M. S. Ippolitov, M. Ishihara, B. V. Jacak, W. Y. Jang, J. Jia, B. M. Johnson, S. C. Johnson, K. S. Joo, S. Kametani, J. H. Kang, M. Kann, S. S. Kapoor, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. J. Kim, H. J. Kim, S. Y. Kim, Y. G. Kim, W. W. Kinnison, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, S. Klinksiek, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, D. Kotchetkov, A. Kozlov, P. J. Kroon, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J. G. Lajoie, J. Lauret, A. Lebedev, D. M. Lee, M. J. Leitch, X. H. Li, Z. Li, D. J. Lim, M. X. Liu, X. Liu, Z. Liu, C. F. Maguire, J. Mahon, Y. I. Makdisi, V. I. Manko, Y. Mao, S. K. Mark, S. Markacs, G. Martinez, M. D. Marx, A. Masaike, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, M. Merschmeyer, F. Messer, M. Messer, Y. Miake, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, M. Muniruzzaman, J. Murata, S. Nagamiya, Y. Nagasaka, J. L. Nagle, Y. Nakada, B. K. Nandi, J. Newby, L. Nikkinen, P. Nilsson, S. Nishimura, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, M. Ono, V. Onuchin, A. Oskarsson, L. Österman, I. Otterlund, K. Oyama, L. Paffrath, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, S. F. Pate, T. Peitzmann, A. N. Petridis, C. Pinkenburg, R. P. Pisani, P. Pitukhin, F. Plasil, M. Pollack, K. Pope, M. L. Purschke, I. Ravinovich, K. F. Read, K. Reygers, V. Riabov, Y. Riabov, M. Rosati, A. A. Rose, S. S. Ryu, N. Saito, A. Sakaguchi, T. Sakaguchi, H. Sako, T. Sakuma, V. Samsonov, T. C. Sangster, R. Santo, H. D. Sato, S. Sato, S. Sawada, B. R. Schlei, Y. Schutz, V. Semenov, R. Seto, T. K. Shea, I. Shein, T. A. Shibata, K. Shigaki, T. Shiina, Y. H. Shin, I. G. Sibiriak, D. Silvermyr, K. S. Sim, J. Simon-Gillo, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, S. Sorensen, P. W. Stankus, N. Starinsky, P. Steinberg, E. Stenlund, A. Ster, S. P. Stoll, M. Sugioka, T. Sugitate, J. P. Sullivan, Y. Sumi, Z. Sun, M. Suzuki, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, E. Taniguchi, M. J. Tannenbaum, J. Thomas, J. H. Thomas, T. L. Thomas, W. Tian, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, A. A. Tsvetkov, S. K. Tuli, H. Tydesjö, N. Tyurin, T. Ushiroda, H. W. van Hecke, C. Velissaris, J. Velkovska, M. Velkovsky, A. A. Vinogradov, M. A. Volkov, A. Vorobyov, E. Vznuzdaev, H. Wang, Y. Watanabe, S. N. White, C. Witzig, F. K. Wohn, C. L. Woody, W. Xie, K. Yagi, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, Z. Zhang, S. Zhou

      Physical Review Letters89 ( 8 ) 082301/6   2002年8月19日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society  

      The results from an analysis of net charge fluctuations for particles produced in Au+Au interactions at √sNN=130 GeV. The fluctuations are studied in the variables R=n+/n-, the ratio between positive and negative particles, and Q=n+-n-, the net charge. This paper discusses the advantages and disadvantages of these variables.

      DOI: 10.1103/PhysRevLett.89.082301

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    • Measurement of Lambda and (Lambda)over-bar particles in Au plus Au collisions at root s(NN)=130 GeV

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, PD Barnes, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, S Butsyk, TA Carey, P Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG D'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, JS Haggerty, H Hamagaki, AG Hansen, H Hara, EP Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, JM Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kann, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kochenda, Kochetkov, V, D Koehler, T Kohama, D Kotchetkov, A Kozlov, PJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, M Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, D Mukhopadhyay, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, D Pal, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, AN Petridis, C Pinkenburg, RP Pisani, P Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riabov, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, P Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, MA Volkov, A Vorobyov, E Vznuzdaev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou, S Zhou

      PHYSICAL REVIEW LETTERS89 ( 9 ) 92302   2002年8月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      We present results on the measurement of Lambda and (Lambda) over bar production in Au+Au collisions at roots(NN)=130 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. The transverse momentum spectra were measured for minimum bias and for the 5% most central events. The (Lambda) over bar/Lambda ratios are constant as a function of p(T) and the number of participants. The measured net Lambda density is significantly larger than predicted by models based on hadronic strings (e.g., HIJING) but in approximate agreement with models which include the gluon-junction mechanism.

      DOI: 10.1103/PhysRevLett.89.092302

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    • Measurement of analyzing power for proton-carbon elastic scattering in the Coulomb-nuclear interference region with a 22-GeV/c polarized proton beam

      J. Tojo, I. Alekseev, M. Bai, B. Bassalleck, G. Bunce, G. Bunce, A. Deshpande, J. Doskow, S. Eilerts, D. E. Fields, D. E. Fields, Y. Goto, Y. Goto, H. Huang, V. Hughes, K. Imai, M. Ishihara, M. Ishihara, V. Kanavets, K. Kurita, K. Kwiatkowski, B. Lewis, W. Lozowski, Y. Makdisi, H. O. Meyer, B. V. Morozov, M. Nakamura, B. Przewoski, T. Rinckel, T. Roser, A. Rusek, N. Saito, N. Saito, B. Smith, D. Svirida, M. Syphers, A. Taketani, A. Taketani, T. L. Thomas, D. Underwood, D. Wolfe, K. Yamamoto, L. Zhu

      Physical Review Letters89 ( 5 ) 052302/1 - 052302/4   2002年7月29日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      The analyzing power (AN) for pC elastic scattering in the Coulomb-nuclear interference (CNI) region of 9.0×10-3&lt
      -t&lt
      4.1×10-2 (GeV/c)2 at 21.7 GeV/c with high statistical precision was measured. A nonzero value for r5 was obtained from AN to be Rer5=0.088±0.058 and Imr5=-0.161±0.226.

      DOI: 10.1103/PhysRevLett.89.052302

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    • Measurement of single electrons and implications for charm production in Au+Au collisions at root(NN)-N-S=130 GeV

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, PD Barnes, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, S Butsyk, TA Carey, P Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG D'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, T Hachiya, JS Haggerty, H Hamagaki, AG Hansen, H Hara, EP Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, JM Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kann, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kochenda, Kochetkov, V, D Koehler, T Kohama, D Kotchetkov, A Kozlov, PJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, M Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, AN Petridis, C Pinkenburg, RP Pisani, P Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riabov, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, P Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, MA Volkov, A Vorobyov, E Vznuzdaev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou

      PHYSICAL REVIEW LETTERS88 ( 19 ) 192303   2002年5月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Transverse momentum spectra of electrons from Au+Au collisions at roots(NN) = 130 GeV have been measured at midrapidity by the PHENIX experiment at the Relativistic Heavy Ion Collider. The spectra show an excess above the background from photon conversions and light hadron decays. The electron signal is consistent with that expected from semileptonic decays of charm. The yield of the electron signal dN(e)/dy for p(T) > 0.8 GeV/c is 0.025 +/- 0.004(stat) +/- 0.010( syst) in central collisions, and the corresponding charm cross section is 380 +/- 60(stat) +/- 200(syst ) mub per binary nucleon-nucleon collision.

      DOI: 10.1103/PhysRevLett.88.192303

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    • Proton Carbon CNI Polarimeter for RHIC

      栗田 和好

      Nucl.Phys.Proc.Suppl.105:   164 - 167   2002年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Suppression of hadrons with large transverse momentum in central Au+Au collisions at root s(NN)=130 GeV

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, PD Barnes, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, S Butsyk, TA Carey, R Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG D'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, JS Haggerty, H Hamagaki, AG Hansen, H Hara, ER Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, JM Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kann, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kochenda, Kochetkov, V, D Koehler, T Kohama, D Kotchetkov, A Kozlov, RJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, M Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, R Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, AN Petridis, C Pinkenburg, RR Pisani, R Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riabov, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, R Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, MA Volkov, A Vorobyov, E Vznuzdaev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou

      PHYSICAL REVIEW LETTERS88 ( 2 ) 22301   2002年1月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Transverse momentum spectra for charged hadrons and for neutral pions in the range 1 Gev/c &lt; P-T &lt; 5 GeV/c have been measured by the PHENIX experiment at RHIC in Au + Au collisions at rootS(NN) = 130 GeV. At high p(T) the spectra from peripheral nuclear collisions are consistent with scaling the spectra from p + p collisions by the average number of binary nucleon-nucleon collisions. The spectra from central collisions are significantly suppressed when compared to the binary-scaled p + p expectation, and also when compared to similarly binary-scaled peripheral collisions, indicating a novel nuclear-medium effect in central nuclear collisions at RHIC energies.

      DOI: 10.1103/PhysRevLett.88.022301

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    • Transverse Mass Dependence Of Two Pion Corrclations In Au+Au Collisions At S(NN)**(1/2)= 130-GeV.

      栗田 和好

      Phys.Rev.Lett.88:   192302   2002年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Centrality Dependence Of Pi+ / Pi-,K+ / K-, P And Anti-P Production From S(Nn)**(1/2)= 13-=Gev Au+Au Collisions At RHIC.

      栗田 和好

      Phys.Rev.Lett.   2002年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Systematics of midrapidity transverse energy distributions in limited apertures from p+Be to Au+Au collisions at relativistic energies (vol C 63 art. no. 064602, 2001)

      T Abbott, L Ahle, Y Akiba, D Alburger, D Beavis, L Birstein, MA Bloomer, PD Bond, HC Britt, B Budick, C Chasman, Z Chen, CY Chi, YY Chu, Cianciolo, V, BA Cole, JB Costales, HJ Crawford, JB Cumming, R Debbe, E Duek, J Engelage, SY Fung, M Gonin, L Grodzins, S Gushue, H Hamagaki, O Hansen, RS Hayano, S Hayashi, S Homma, HZ Huang, Y Ikeda, Juricic, I, H Kaneko, J Kang, S Katcoff, S Kaufman, WL Kehoe, K Kimura, K Kitamura, K Kurita, RJ Ledoux, MJ LeVine, Y Miake, DP Morrison, RJ Morse, B Moskowitz, S Nagamiya, MN Namboodiri, TK Nayak, J Olness, CG Parsons, LP Remsberg, P Rothschild, H Sakurai, TC Sangster, M Sarabura, R Seto, K Shigaki, A Shor, R Soltz, P Stankus, SG Steadman, GSF Stephans, T Sugitate, T Sung, M Tanaka, MJ Tannenbaum, J Thomas, S Tonse, M Torikoshi, S Ueno-Hayashi, JH van Dijk, F Videbaek, M Vient, P Vincent, O Vossnack, E Vulgaris, Vutsadakis, V, FQ Wang, Y Wang, WA Watson, HE Wegner, DS Woodruff, YD Wu, K Yagi, Yang, X, D Zachary, WA Zajc

      PHYSICAL REVIEW C64 ( 2 ) 64602   2001年8月

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)   出版者・発行元:AMERICAN PHYSICAL SOC  

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    • Systematics of midrapidity transverse energy distributions in limited apertures from p+Be to Au+Au collisions at relativistic energies (vol C 63 art. no. 064602, 2001)

      T Abbott, L Ahle, Y Akiba, D Alburger, D Beavis, L Birstein, MA Bloomer, PD Bond, HC Britt, B Budick, C Chasman, Z Chen, CY Chi, YY Chu, Cianciolo, V, BA Cole, JB Costales, HJ Crawford, JB Cumming, R Debbe, E Duek, J Engelage, SY Fung, M Gonin, L Grodzins, S Gushue, H Hamagaki, O Hansen, RS Hayano, S Hayashi, S Homma, HZ Huang, Y Ikeda, Juricic, I, H Kaneko, J Kang, S Katcoff, S Kaufman, WL Kehoe, K Kimura, K Kitamura, K Kurita, RJ Ledoux, MJ LeVine, Y Miake, DP Morrison, RJ Morse, B Moskowitz, S Nagamiya, MN Namboodiri, TK Nayak, J Olness, CG Parsons, LP Remsberg, P Rothschild, H Sakurai, TC Sangster, M Sarabura, R Seto, K Shigaki, A Shor, R Soltz, P Stankus, SG Steadman, GSF Stephans, T Sugitate, T Sung, M Tanaka, MJ Tannenbaum, J Thomas, S Tonse, M Torikoshi, S Ueno-Hayashi, JH van Dijk, F Videbaek, M Vient, P Vincent, O Vossnack, E Vulgaris, Vutsadakis, V, FQ Wang, Y Wang, WA Watson, HE Wegner, DS Woodruff, YD Wu, K Yagi, Yang, X, D Zachary, WA Zajc

      PHYSICAL REVIEW C64 ( 2 ) 64602   2001年8月

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)   出版者・発行元:AMERICAN PHYSICAL SOC  

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    • Measurement of the midrapidity transverse energy distribution from √sNN = 130GeV Au + Au collisions at RHIC

      K. Adcox, S. S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, L. Aphecetche, Y. Arai, S. H. Aronson, R. Averbeck, T. C. Awes, K. N. Barish, P. D. Barnes, J. Barrette, B. Bassalleck, S. Bathe, V. Baublis, A. Bazilevsky, S. Belikov, F. G. Bellaiche, S. T. Belyaev, M. J. Bennett, Y. Berdnikov, S. Botelho, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. Burward-Hoy, S. Butsyk, T. A. Carey, P. Chand, J. Chang, W. C. Chang, L. L. Chavez, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, R. K. Choudhury, T. Christ, T. Chujo, M. S. Chung, P. Chung, V. Cianciolo, B. A. Cole, D. G. D’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, B. V. Dinesh, A. Drees, A. Durum, D. Dutta, K. Ebisu, Y. V. Efremenko, K. El Chenawi, H. En’yo, S. Esumi, L. Ewell, T. Ferdousi, D. E. Fields, S. L. Fokin, Z. Fraenkel, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, A. L. Godoi, Y. Goto, S. V. Greene, M. Grosse Perdekamp, S. K. Gupta, W. Guryn, H. Gustafsson, J. S. Haggerty, H. Hamagaki, A. G. Hansen, H. Hara, E. P. Hartouni, R. Hayano, N. Hayashi, X. He, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, D. S. Ho, K. Homma, B. Hong, A. Hoover, T. Ichihara, K. Imai, M. S. Ippolitov, M. Ishihara, B. V. Jacak, W. Y. Jang, J. Jia, B. M. Johnson, S. C. Johnson, K. S. Joo, S. Kametani, J. H. Kang, M. Kann, S. S. Kapoor, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. J. Kim, H. J. Kim, S. Y. Kim, Y. G. Kim, W. W. Kinnison, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, S. Klinksiek, L. Kochenda, D. Kochetkov, V. Kochetkov, D. Koehler, T. Kohama, A. Kozlov, P. J. Kroon, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J. G. Lajoie, J. Lauret, A. Lebedev, D. M. Lee, M. J. Leitch, X. H. Li, Z. Li, D. J. Lim, M. X. Liu, X. Liu, Z. Liu, C. F. Maguire, J. Mahon, Y. I. Makdisi, V. I. Manko, Y. Mao, S. K. Mark, S. Markacs, G. Martinez, M. D. Marx, A. Masaike, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, M. Merschmeyer, F. Messer, M. Messer, Y. Miake, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, M. Muniruzzaman, J. Murata, S. Nagamiya, Y. Nagasaka, J. L. Nagle, Y. Nakada, B. K. Nandi, J. Newby, L. Nikkinen, P. Nilsson, S. Nishimura, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, M. Ono, V. Onuchin, A. Oskarsson, L. österman, I. Otterlund, K. Oyama, L. Paffrath, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, S. F. Pate, T. Peitzmann, A. N. Petridis, C. Pinkenburg, R. P. Pisani, P. Pitukhin, F. Plasil, M. Pollack, K. Pope, M. L. Purschke, I. Ravinovich, K. F. Read, K. Reygers, V. Riabov, Y. Riabov, M. Rosati, A. A. Rose, S. S. Ryu, N. Saito, A. Sakaguchi, T. Sakaguchi, H. Sako, T. Sakuma, V. Samsonov, T. C. Sangster, R. Santo, H. D. Sato, S. Sato, S. Sawada, B. R. Schlei, Y. Schutz, V. Semenov, R. Seto, T. K. Shea, I. Shein, T. A. Shibata, K. Shigaki, T. Shiina, Y. H. Shin, I. G. Sibiriak, D. Silvermyr, K. S. Sim, J. Simon-Gillo, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, S. Sorensen, P. W. Stankus, N. Starinsky, P. Steinberg, E. Stenlund, A. Ster, S. P. Stoll, M. Sugioka, T. Sugitate, J. P. Sullivan, Y. Sumi, Z. Sun, M. Suzuki, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, E. Taniguchi, M. J. Tannenbaum, J. Thomas, J. H. Thomas, T. L. Thomas, W. Tian, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, A. A. Tsvetkov, S. K. Tuli, H. Tydesjö, N. Tyurin, T. Ushiroda, H. W. van Hecke, C. Velissaris, J. Velkovska, M. Velkovsky, A. A. Vinogradov, M. A. Volkov, A. Vorobyov, E. Vznuzdaev, H. Wang, Y. Watanabe, S. N. White, C. Witzig, F. K. Wohn, C. L. Woody, W. Xie, K. Yagi, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, Z. Zhang, S. Zhou, PHENIX Collaboration

      Physical Review Letters87 ( 5 ) 52301 - 52301-6   2001年7月30日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      The first measurement of energy produced transverse to the beam direction at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory is presented. The midrapidity transverse energy density per participating nucleon rises steadily with the number of participants, closely paralleling the rise in charged-particle density, such that ⟨ET⟩/⟨Nch⟩ remains relatively constant as a function of centrality. The energy density calculated via Bjorken’s prescription for the 2% most central Au + Au collisions at √sNN = 130GeV is at least εBj = 4.6GeV/fm3, which is a factor of 1.6 larger than found at √sNN = 17.2GeV(Pb + Pb at CERN). © 2001 American Physical Society.

      DOI: 10.1103/PhysRevLett.87.052301

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    • Measurement Of The Midrapidity Transverse Energy Distribution From S(Nn)**(1/2)=130-GeV Au+Au Collisions At RHIC

      栗田 和好

      Phys. Rev. Lett.87 ( 5 ) 52301 - 52301-6   2001年7月30日

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      記述言語:英語   掲載種別:研究論文(学術雑誌)  

      DOI: 10.1103/PhysRevLett.87.052301

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    • Localized charged-neutral fluctuations in 158A GeVPb plus Pb collisions

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, AK Dubey, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, C Klein-Bosing, S Knoche, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, G Mgebrichvili, Y Miake, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, MJ Mora, D Morrison, DS Mukhopadhyay, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, S Pavliouk, T Peitzmann, Petracek, V, W Pinganaud, F Plasil, U von Poblotzki, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, G Sood, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC von der Pijll, N von Eijndhoven, GJ von Nieuwenhuizen, A Vinogradov, YP Viyogi, AV Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      PHYSICAL REVIEW C64 ( 1 ) 11901   2001年7月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

      Localized fluctuations in the multiplicity of charged particles and photons produced in central 158A GeV/c Pb+Pb collisions are studied. The charged versus neutral correlations in common eta-phi phase space regions of varying azimuthal size are analyzed by two different methods. The analysis provides a model-independent demonstration of nonstatistical fluctuations in both charged particle and photon multiplicities in limited azimuthal regions. However, no correlated charge-neutral fluctuations are observed, contrary to expectations for the production of a disoriented chiral condensate. The result is not explained by the widely used VENUS model.

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    • Centrality dependence of charged particle multiplicity in Au-Au collisions at root(S)NN=130 GeV

      K Adcox, SS Adler, NN Ajitanand, Y Akiba, J Alexander, L Aphecetche, Y Arai, SH Aronson, R Averbeck, TC Awes, KN Barish, PD Barnes, J Barrette, B Bassalleck, S Bathe, Baublis, V, A Bazilevsky, S Belikov, FG Bellaiche, ST Belyaev, MJ Bennett, Y Berdnikov, S Botelho, ML Brooks, DS Brown, N Bruner, D Bucher, H Buesching, Bumazhnov, V, G Bunce, J Burward-Hoy, S Butsyk, TA Carey, P Chand, J Chang, WC Chang, LL Chavez, S Chernichenko, CY Chi, J Chiba, M Chiu, RK Choudhury, T Christ, T Chujo, MS Chung, P Chung, Cianciolo, V, BA Cole, DG D'Enterria, G David, H Delagrange, A Denisov, A Deshpande, EJ Desmond, O Dietzsch, BV Dinesh, A Drees, A Durum, D Dutta, K Ebisu, YV Efremenko, K El Chenawi, H En'yo, S Esumi, L Ewell, T Ferdousi, DE Fields, SL Fokin, Z Fraenkel, A Franz, AD Frawley, SY Fung, S Garpman, TK Ghosh, A Glenn, AL Godoi, Y Goto, SV Greene, MG Perdekamp, SK Gupta, W Guryn, HA Gustafsson, JS Haggerty, H Hamagaki, AG Hansen, H Hara, EP Hartouni, R Hayano, N Hayashi, He, X, TK Hemmick, J Heuser, M Hibino, JC Hill, DS Ho, K Homma, B Hong, A Hoover, T Ichihara, K Imai, MS Ippolitov, M Ishihara, BV Jacak, WY Jang, J Jia, BM Johnson, SC Johnson, KS Joo, S Kametani, JH Kang, M Kam, SS Kapoor, S Kelly, B Khachaturov, A Khanzadeev, J Kikuchi, DJ Kim, HJ Kim, SY Kim, YG Kim, WW Kinnison, E Kistenev, A Kiyomichi, C Klein-Boesing, S Klinksiek, L Kochenda, D Kochetkov, Kochetkov, V, D Koehler, T Kohama, A Kozlov, PJ Kroon, K Kurita, MJ Kweon, Y Kwon, GS Kyle, R Lacey, JG Lajoie, J Lauret, A Lebedev, DM Lee, MJ Leitch, XH Li, Z Li, DJ Lim, MX Liu, Liu, X, Z Liu, CF Maguire, J Mahon, YI Makdisi, Manko, VI, Y Mao, SK Mark, S Markacs, G Martinez, MD Marx, A Masaike, F Matathias, T Matsumoto, PL McGaughey, E Melnikov, M Merschmeyer, F Messer, M Messer, Y Miake, TE Miller, A Milov, S Mioduszewski, RE Mischke, GC Mishra, JT Mitchell, AK Mohanty, DP Morrison, JM Moss, F Muhlbacher, M Muniruzzaman, J Murata, S Nagamiya, Y Nagasaka, JL Nagle, Y Nakada, BK Nandi, J Newby, L Nikkinen, P Nilsson, S Nishimura, AS Nyanin, J Nystrand, E O'Brien, CA Ogilvie, H Ohnishi, ID Ojha, M Ono, Onuchin, V, A Oskarsson, L Osterman, Otterlund, I, K Oyama, L Paffrath, APT Palounek, VS Pantuev, Papavassiliou, V, SF Pate, T Peitzmann, AN Petridis, C Pinkenburg, RP Pisani, P Pitukhin, F Plasil, M Pollack, K Pope, ML Purschke, Ravinovich, I, KF Read, K Reygers, Riabov, V, Y Riabov, M Rosati, AA Rose, SS Ryu, N Saito, A Sakaguchi, T Sakaguchi, H Sako, T Sakuma, Samsonov, V, TC Sangster, R Santo, HD Sato, S Sato, S Sawada, BR Schlei, Y Schutz, Semenov, V, R Seto, TK Shea, Shein, I, TA Shibata, K Shigaki, T Shiina, YH Shin, IG Sibiriak, D Silvermyr, KS Sim, J Simon-Gillo, CP Singh, Singh, V, M Sivertz, A Soldatov, RA Soltz, S Sorensen, PW Stankus, N Starinsky, P Steinberg, E Stenlund, A Ster, SP Stoll, M Sugioka, T Sugitate, JP Sullivan, Y Sumi, Z Sun, M Suzuki, EM Takagui, A Taketani, M Tamai, KH Tanaka, Y Tanaka, E Taniguchi, MJ Tannenbaum, J Thomas, JH Thomas, TL Thomas, W Tian, J Tojo, H Torii, RS Towell, Tserruya, I, H Tsuruoka, AA Tsvetkov, SK Tuli, H Tydesjo, N Tyurin, T Ushiroda, HW van Hecke, C Velissaris, J Velkovska, M Velkovsky, AA Vinogradov, MA Volkov, A Vorobyov, E Vznuzdnev, H Wang, Y Watanabe, SN White, C Witzig, FK Wohn, CL Woody, W Xie, K Yagi, S Yokkaichi, GR Young, IE Yushmanov, WA Zajc, Z Zhang, S Zhou

      PHYSICAL REVIEW LETTERS86 ( 16 ) 3500 - 3505   2001年4月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

      We present results for the charged-particle multiplicity distribution at midrapidity in Au-Au collisions at roots(NN) = 130 GeV measured with the PHENIX detector at RHIC. For the 5% most central collisions we find dN(ch)/d eta (|eta =0) = 622 +/- 1(stat) +/- 41(syst). The results, analyzed as a function of centrality show a steady rise of the particle density per participating nucleon with centrality.

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    • Measurement of the analyzing power for proton-carbon elastic scattering in the CNT region with a 22 GeV/c polarized proton beam

      J Tojo, Alekseev, I, M Bai, B Bassalleck, G Bunce, A Deshpande, J Doskow, S Eilerts, DE Fields, Y Goto, H Huang, Hughes, V, K Imai, M Ishihara, Kanavets, V, K Kurita, K Kwiatkowski, B Lewis, B Lozowski, Y Makdisi, HO Meyer, BV Morozov, M Nakamura, B Przewoski, T Rinkel, T Roser, A Rusek, N Saito, B Smith, D Svirida, M Syphers, A Taketani, TL Thomas, D Underwood, D Wolfe, K Yamamoto, L Zhu

      SPIN 2000570   790 - 794   2001年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

      We have carried out the experiment BNL-AGS E950 to measure the analyzing power for proton-carbon elastic scattering in the Coulomb-Nuclear Interference (CNI) region with a 22 GeV/c polarized proton beam. Recoil carbons from 300 keV to a few MeV in the CNI region, were detected inside the AGS ring to identify proton-carbon elastic scattering, The preliminary results of the analyzing power measurement are presented.

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    • Commissioning of RHIC p-carbon CNI polarimeter

      H Huang, Alekseev, I, G Bunce, A Deshpande, D Fields, K Imai, Kanavets, V, K Kurita, B Lozowski, W MacKay, Y Makdisi, T Roser, N Saito, H Spinka, D Svirida, J Tojo, D Underwood

      SPIN 2000570   795 - 799   2001年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

      An innovative polarimeter based on proton carbon elastic scattering in the Coulomb Nuclear Interference (CNI) region has been installed and commissioned in the Blue ring of RHIC during the first RHIC polarized proton commissioning. The polarimeter consists of ultra-thin carbon targets and four silicon detectors. All elements are in a 1.6 meter target chamber. It worked very well as a pivotal tool during the commissioning. It demonstrated that the RHIC snake magnets rotate spin to the expected direction, The results also show that polarized proton beam has been accelerated in RHIC and the polarization is maintained up to 29 GeV.

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    • Proton Carbon CNI Polarimeter for RHIC

      栗田 和好

      Proceedings of International Workshop on the Spin Structure of the Proton and Polarized Collider Physics   2001年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Scaling of particle and transverse energy production in Pb-208+Pb-208 collisions at 158 center dot A GeV

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, A Baldine, L Barabach, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, EM Bohne, ZK Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, Frolov, V, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, H Kim, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, R Mehdiyev, G Mgebrichvili, Y Miake, D Mikhalev, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, MJ Mora, D Morrison, DS Mukhopadhyay, Myalkovski, V, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, A Parfenov, S Pavliouk, T Peitzmann, Petracek, V, F Plasil, W Pinganaud, ML Purschke, B Raeven, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC van der Pijll, N van Eijndhoven, GJ van Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      EUROPEAN PHYSICAL JOURNAL C18 ( 4 ) 651 - 663   2001年1月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

      Transverse energy, charged particle pseudorapidity distributions and photon transverse momentum spectra have been studied as a function of the number of participants (N-part) and the number of binary nucleon-nucleon collisions (N-coll) in 158.A GeV Pb+Pb collisions over a wide impact parameter range. A scaling of the transverse energy pseudorapidity density at midrapidity as similar to N-part(1.08+/-0.06) and similar toN(coll)(0.83+/-0.05) is part coil observed. For the charged particle pseudorapidity density at midrapidity we find a scaling as similar to N-part(1.07+/-0.04) and similar toN(coll)(0.82+/-0.03). This faster than linear scaling with N-part indicates a violation of the naive Wounded Nucleon Model.

      DOI: 10.1007/s100520100578

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    • Commissioning of RHIC p-carbon CNI polarimeter

      H Huang, Alekseev, I, G Bunce, A Deshpande, D Fields, K Imai, Kanavets, V, K Kurita, B Lozowski, W MacKay, Y Makdisi, T Roser, N Saito, H Spinka, D Svirida, J Tojo, D Underwood

      SPIN 2000570   795 - 799   2001年

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      記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

      An innovative polarimeter based on proton carbon elastic scattering in the Coulomb Nuclear Interference (CNI) region has been installed and commissioned in the Blue ring of RHIC during the first RHIC polarized proton commissioning. The polarimeter consists of ultra-thin carbon targets and four silicon detectors. All elements are in a 1.6 meter target chamber. It worked very well as a pivotal tool during the commissioning. It demonstrated that the RHIC snake magnets rotate spin to the expected direction, The results also show that polarized proton beam has been accelerated in RHIC and the polarization is maintained up to 29 GeV.

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    • Three-pion interferometry results from central Pb plus Pb collisions at 158A GeV/c

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, C Klein-Bosing, S Knoche, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, G Mgebrichvili, Y Miake, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, MJ Mora, D Morrison, DS Mukhopadhyay, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, S Pavliouk, T Peitzmann, Petracek, V, W Pinganaud, F Plasil, U von Poblotzki, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC van der Pijll, N van Eijndhoven, GJ van Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      PHYSICAL REVIEW LETTERS85 ( 14 ) 2895 - 2899   2000年10月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

      Three-particle correlations have been measured for identified pi(-) from central 158A GeV Pb + Pb collisions by the WA98 experiment at CERN. A substantial contribution of the genuine three-body correlation has been found as expected for a mainly chaotic and symmetric source.

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    • Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, C Klein-Bosing, S Knoche, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, G Mgebrichvili, Y Miake, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, MJ Mora, D Morrison, DS Mukhopadhyay, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, S Pavliouk, T Peitzmann, Petracek, V, W Pinganaud, F Plasil, U von Poblotzki, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, G Good, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC von der Pijll, N von Eijndhoven, GJ von Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      PHYSICAL REVIEW LETTERS85 ( 17 ) 3595 - 3599   2000年10月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

      A measurement of direct photon production in Pb-208 + Pb-208 collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 &lt; p(T) &lt; 4 GeV/c. A significant direct photon signal, compared to statistical and systematical errors, is seen at p(T) &gt; 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.

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    • Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, C Klein-Bosing, S Knoche, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, G Mgebrichvili, Y Miake, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, MJ Mora, D Morrison, DS Mukhopadhyay, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, S Pavliouk, T Peitzmann, Petracek, V, W Pinganaud, F Plasil, U von Poblotzki, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, G Good, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC von der Pijll, N von Eijndhoven, GJ von Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      PHYSICAL REVIEW LETTERS85 ( 17 ) 3595 - 3599   2000年10月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

      A measurement of direct photon production in Pb-208 + Pb-208 collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 &lt; p(T) &lt; 4 GeV/c. A significant direct photon signal, compared to statistical and systematical errors, is seen at p(T) &gt; 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.

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    • Central Pb plus Pb collisions at 158 A GeV/c studied by pi(-)pi(-) interferometry

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, C Klein-Bosing, S Knoche, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, G Mgebrichvili, Y Miake, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, D Morrison, DS Mukhopadhyay, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, S Pavliouk, T Peitzmann, Petracek, V, W Pinganaud, F Plasil, U von Poblotzki, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC vander Pijll, N von Eijndhoven, GJ von Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      EUROPEAN PHYSICAL JOURNAL C16 ( 3 ) 445 - 451   2000年9月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

      Two-particle correlations have been measured for identified pi(-) from central 158 A GeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of k(gamma) is presented, including a full correction for the resolution effects of the apparatus. The cross term R-out-long(2) of the standard fit in the Longitudinally CoMoving System (LCMS) and the upsilon(L) parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion.
      The shapes of the correlation functions in Q(inv) and Q(space) = root&lt;(Q(x)(2) + Q(y)(2) + Q(z)(2))over bar&gt; have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence, fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement.

      DOI: 10.1007/s100520000413

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    • Central Pb plus Pb collisions at 158 A GeV/c studied by pi(-)pi(-) interferometry

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, C Klein-Bosing, S Knoche, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, G Mgebrichvili, Y Miake, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, D Morrison, DS Mukhopadhyay, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, S Pavliouk, T Peitzmann, Petracek, V, W Pinganaud, F Plasil, U von Poblotzki, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC vander Pijll, N von Eijndhoven, GJ von Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      EUROPEAN PHYSICAL JOURNAL C16 ( 3 ) 445 - 451   2000年9月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

      Two-particle correlations have been measured for identified pi(-) from central 158 A GeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of k(gamma) is presented, including a full correction for the resolution effects of the apparatus. The cross term R-out-long(2) of the standard fit in the Longitudinally CoMoving System (LCMS) and the upsilon(L) parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion.
      The shapes of the correlation functions in Q(inv) and Q(space) = root&lt;(Q(x)(2) + Q(y)(2) + Q(z)(2))over bar&gt; have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence, fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement.

      DOI: 10.1007/s100520000413

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    • Delta(++) production in 158 A GeV Pb-208+Pb-208 interactions at the CERN SPS

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, A Baldine, L Barabach, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, H Delagrange, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, Frolov, V, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, G Martinez, A Maximov, R Mehdiyev, G Mgebrichvili, Y Miake, D Mikhalev, MF Mir, GC Mishra, Y Miyamoto, B Mohanty, D Morrison, DS Mukhopadhyay, Myalkovski, V, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, A Parfenov, S Pavliouk, T Peitzmann, Petracek, V, F Plasil, W Pinganaud, ML Purschke, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, Y Schutz, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, L Tykarski, J Urbahn, EC van der Pijll, N van Eijndhoven, GJ van Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      PHYSICS LETTERS B477 ( 1-3 ) 37 - 44   2000年3月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

      The Delta(++)-resonance production in central 158 A GeV Pb-208 + Pb-208 collisions at the CERN SPS has been studied. The Delta(++) production was estimated from the invariant mass spectrum of p pi(+)-pairs by subtracting a mixed event background. The measured Delta(++) abundance is compared with the results from other experiments at lower energies, and with a model calculation assuming thermal and chemical equilibrium. (C) 2000 Elsevier Science B.V. All rights reserved.

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    • Study of the Spin Structure of the Nucleon with RHIC-PHENIX

      栗田 和好

      Proceedings of Lake Louise Winter Institute 2000"From Particles to the Universe",Feb.20-26,2000   2000年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • An Excitation Function Of K- And K+ Production In Au + Au Reactions At Rhe AGS.

      栗田 和好

      Phys.Lett.B490:   53 - 60   2000年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Direct Photon Production In 158-A/Gev Pb-208 + Pb-208 Collisions.

      栗田 和好

      Submitted Phys.Rev.C   2000年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • A large-acceptance spectrometer for tracking in a high-multiplicity environment, based on space point measurements and high-resolution time-of-flight

      L Carlen, K El Chenawi, T Chujo, K Enosawa, S Garpman, HA Gustafsson, M Kurata, K Kurita, H Lohner, M Martin, Y Miake, Y Miyamoto, H Naef, P Nilsson, S Nishimura, J Nystrand, A Oskarsson, L Osterman, Otterlund, I, E Perrin, L Rosselet, JM Rubio, H Sako, S Sato, D Silvermyr, K Soderstrom, N Solomey, E Stenlund, T Svensson, S Voros, K Yagi, Y Yokota

      NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT431 ( 1-2 ) 123 - 133   1999年7月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

      A large acceptance tracking system, specially developed for tracking at very high particle densities encountered in ultra-relativistic heavy-ion collisions is described. The system is a combination of multi-step avalanche chambers equipped with electronic pad readout with high position resolution in two dimensions and streamer-tube detectors with pad readout, with coarser position resolution, that is sufficient for safe pattern recognition. A high-resolution time-of-flight system (time resolution better than 90 ps) provides particle identification up to 8 GeV/c for pions and protons and pion/kaon separation up to 4 GeV/c. All detectors in the tracking system are read out with new, high-performance integrated circuits. The system can operate at high event rates due to efficient zero suppression. The performance of the system for tracking under real running conditions with Pb-beam at 158 A GeV in the WA98 experiment at CERN is presented. (C) 1999 Elsevier Science B.V. All rights reserved.

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    • Systematics of inclusive photon production in 158 center dot A GeVPb induced reactions on Ni, Nb, and Pb targets

      MM Aggarwal, A Agnihotri, Z Ahammed, ALS Angelis, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, TC Awes, PVKS Baba, SK Badyal, A Baldine, L Barabach, C Barlag, S Bathe, B Batiounia, T Bernier, KB Bhalla, VS Bhatia, C Blume, R Bock, EM Bohne, Z Borocz, D Bucher, A Buijs, H Busching, L Carlen, Chalyshev, V, S Chattopadhyay, R Cherbatchev, T Chujo, A Claussen, AC Das, MP Decowski, Djordjadze, V, P Donni, Doubovik, I, S Dutt, MRD Majumdar, K El Chenawi, S Eliseev, K Enosawa, P Foka, S Fokin, Frolov, V, MS Ganti, S Garpman, O Gavrishchuk, FJM Geurts, TK Ghosh, R Glasow, SK Gupta, B Guskov, HA Gustafsson, HH Gutbrod, R Higuchi, Hrivnacova, I, M Ippolitov, H Kalechofsky, R Kamermans, KH Kampert, K Karadjev, K Karpio, S Kato, S Kees, H Kim, BW Kolb, Kosarev, I, Koutcheryaev, I, T Krumpel, A Kugler, P Kulinich, M Kurata, K Kurita, N Kuzmin, Langbein, I, A Lebedev, YY Lee, H Lohner, L Luquin, DP Mahapatra, Manko, V, M Martin, A Maximov, R Mehdiyev, G Mgebrichvili, Y Miake, D Mikhalev, MF Mir, GC Mishra, Y Miyamoto, D Morrison, DS Mukhopadhyay, Myalkovski, V, H Naef, BK Nandi, SK Nayak, TK Nayak, S Neumaier, A Nianine, Nikitine, V, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, FE Obenshain, A Oskarsson, Otterlund, I, M Pachr, A Parfenov, S Pavliouk, T Peitzmann, Petracek, V, F Plasil, W Pinanaud, ML Purschke, B Raeven, J Rak, R Raniwala, S Raniwala, VS Ramamurthy, NK Rao, F Retiere, K Reygers, G Roland, L Rosselet, Roufanov, I, C Roy, JM Rubio, H Sako, SS Sambyal, R Santo, S Sato, H Schlagheck, HR Schmidt, G Shabratova, TH Shah, Sibiriak, I, T Siemiarczuk, D Silvermyr, BC Sinha, N Slavine, K Soderstrom, N Solomey, SP Sorensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, D Stuken, M Sumbera, T Svensson, MD Trivedi, A Tsvetkov, C Twenhofel, L Tykarski, J Urbahn, N Von Eijndhoven, GJ Von Nieuwenhuizen, A Vinogradov, YP Viyogi, A Vodopianov, S Voros, B Wyslouch, K Yagi, Y Yokota, GR Young

      PHYSICS LETTERS B458 ( 2-3 ) 422 - 430   1999年7月

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      記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

      The multiplicity of inclusive photons has been measured on an event-by-event basis for 158.A GeV Pb induced reactions on Ni, Nb, and Pb targets. The systematics of the pseudorapidity densities at midrapidity (rho(max)) and the width of the pseudorapidity distributions have been studied for varying centralities for these collisions. A power law fit to the photon yield as a function of the number of participating nucleons gives a value of 1.12 +/- 0.03 for the exponent. The mean transverse momentum, [p(T)], of photons determined from the ratio of the measured electromagnetic transverse energy and photon multiplicity, remains almost constant with increasing rho(max). Results are compared with model predictions. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

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    • Elliptic Emission of K+ and Pi+ in 158A GeV Pb+Pb Collisions

      栗田 和好

      Phys. Lett. ( B ) 15292   1999年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Proton And Deuteron Production In Au+Au Reactions At 11.6/A-GeV/C

      栗田 和好

      Phys. Rev. ( C60 ) 64901   1999年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Centrality Dependence Of Kaon Yields In Si+A And Au+Au Collisions At The Ags

      栗田 和好

      Phys. Rev. ( C60 ) 44904   1999年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • A new polarimeter for RHIC

      栗田 和好

      Proceedings of Workshop on Polarized Protons at High Energies, DESY Hamburg, Germany   71 - 76   1999年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • Excitation Function Of K+ And Pi+ Production In Au+Au Reactions At 2/A-GeV To 10/A-GeV

      栗田 和好

      Phys. Lett. ( B469 ) 30 - 36   1999年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • A Forward Magnetic Spectrometer System For High-Energy Heavy-Ion Experiments

      栗田 和好

      Nucl. Instrum. Meth. ( A438 ) 282 - 301   1999年1月1日

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      記述言語:英語   掲載種別:研究論文(その他学術会議資料等)  

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    • 30p-PSA-18 RHIC用飛行時間測定器のためのプラスチックシンチレータ二おける時間分解能劣化と光量減衰の研究

      倉田, 美月, 加藤, 純雄, 熊谷, 荒太, 栗田, 和好, 三明, 康郎, 佐藤, 進, 富沢, 和之, 上野ー林, 祥子, 八木, 浩輔, Nagamiya, S, Nayak, T.K, Vossnack, O, Yang, X, Zhan, W

      日本物理学会講演概要集. 秋の分科会1994 ( 1 ) 117   1994年9月

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      記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:社団法人日本物理学会  

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    • Particle Production Study in Proton-Nucleus and Central Oxygen-Nucleus Collisions at 14.5 A GeV/c 査読有り

      Kazuyoshi Kurita

          1992年2月

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      記述言語:英語   掲載種別:学位論文(その他)  

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    ▼全件表示

    MISC

    • SCRIT実験における捕獲されたイオンのモジュレーション依存性

      内田信昭, 足立江介, 市川進一, 榎園昭智, 大西哲哉, 笠間桂太, 栗田和好, 須田利美, 玉江忠明, 塚田暁, 戸ケ崎衛, 原雅弘, 藤田峻広, 堀充希, 堀利匡, 山田耕平, 若杉昌徳, 渡邊正満

      日本物理学会講演概要集(CD-ROM)73 ( 1 ) ROMBUNNO.22pK301‐11   2018年3月23日

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      記述言語:日本語  

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    • The scrit electron scattering facility project at the riken ri beam factory

      T. Ohnishi, A. Enokizono, M. Hara, M. Hori, S. Ichikawa, M. Wakasugi, M. Watanabe, K. Adachi, T. Fujita, T. Hori, K. Kurita, M. Togasaki, N. Uchida, K. Yamada, T. Suda, T. Tamae, K. Tsukada

      Acta Physica Polonica B49   483 - 493   2018年3月1日

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      © 2018 Jagellonian University. All rights reserved. The SCRIT electron scattering facility has been constructed at the RIKEN RI Beam Factory. The commissioning experiment was performed and the properties of the ion trapping were studied. The first electron elastic scattering experiment of132Xe was performed and the charge density distribution was obtained. The achieved luminosity in the experiment was 1:8×1027 cm-2s-1with a 250 mA electron beam current and the injection of 108 ions. The production of unstable nuclei has been started with a new online isotope separator (ISOL) system at the SCRIT facility, and developments of the ISOL system for increasing rates of unstable nuclei are underway. Electron scattering with unstable nuclei will be performed in the near future.

      DOI: 10.5506/APhysPolB.49.483

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    • First Elastic Electron Scattering from Xe 132 at the SCRIT Facility

      K. Tsukada, K. Tsukada, A. Enokizono, A. Enokizono, T. Ohnishi, K. Adachi, T. Fujita, M. Hara, M. Hori, T. Hori, S. Ichikawa, K. Kurita, K. Matsuda, T. Suda, T. Suda, T. Tamae, T. Tamae, M. Togasaki, M. Wakasugi, M. Watanabe, K. Yamada

      Physical Review Letters118   2017年6月27日

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      © 2017 American Physical Society. The first elastic electron scattering has been successfully performed at the self-confining radioactive-isotope ion target (SCRIT) facility, the world&#039;s first electron scattering facility for SCRIT technique achieved high luminosity (over 1027 cm-2 s-1, sufficient for determining the nuclear shape) with only 108 target ions. While Xe132 used in this time as a target is a stable isotope, the charge density distribution was first extracted from the momentum transfer distributions of the scattered electrons by comparing the results with those calculated by a phase shift calculation.

      DOI: 10.1103/PhysRevLett.118.262501

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    • First result from SCRIT electron scattering facility: Charge density distribution of Xe

      K. Tsukada, K. Kasama, K. Namba, T. Suda, T. Tamae, M. Hara, S. Ichikawa, T. Ohnishi, M. Wakasugi, M. Watanabe, K. Adachi, A. Enokizono, T. Fujita, M. Hori, K. Kurita, S. Sasamura, M. Togasaki, N. Uchida, K. Yamada, S. Wang

      Proceedings of Science2016-September   2016年1月1日

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      © Copyright owned by the author(s). We have constructed the SCRIT electron scattering facility at RIKEN in order to realize electron scattering off unstable nuclei. Because electron scattering is the most powerful and reliable tool to study the internal structure of the atomic nuclei as demonstrated for many stable nuclei in the latter half of the 20th century, actualization of electron scattering for the unstable nuclei has been long awaited. Recently, we have performed a series of elastic electron scattering experiments with132Xe target. The high luminosity of around 1027cm-2s-1which is a minimum-requirement for electron scattering is achieved with using only 108target ions. By comparing with a DWBA calculation assuming the two-parameter Fermi distribution as the nuclear charge density distribution, it is found that a root-mean-square of radius is consistent with that from the measurement of X-ray of muonic atom and an information of surface shape of132Xe nucleus is extracted for the first time.

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    • The performance of the SCRIT detectors for electron-RI scattering experiment

      A. Enokizono, K. Adachi, T. Fujita, M. Hori, K. Kurita, S. Sasamura, M. Togasaki, N. Uchida, K. Yamada, K. Kasama, K. Namba, T. Suda, T. Tamae, K. Tsukada, M. Hara, T. Hori, S. Ichikawa, T. Ohnishi, M. Wakasugi, M. Watanabe, S. Wang

      Proceedings of Science2016-September   2016年1月1日

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      © Copyright owned by the author(s). The SCRIT (Self-Confining RI Ion Target) facility has been constructed at RIKEN to make the electron-RI scattering experiment possible for the first time in the world. At SCRIT, the angular momentum distribution of scattered electrons is measured by WiSES (Window-frame Spectrometer for Electron Scattering) which consists of a dipole magnet and front/rear drift chambers, covering a solid angle of ∼80 mSr with an intrinsic momentum resolution of Δp/p ∼ 10-3. Also the luminosity of the electron-RI scattering is estimated from bremsstrahlung photons measured by LMon (Luminosity Monitor) to obtain the absolute cross-section of the scattering. The LMon consists of a CsI calorimeter to measure the photon energy, and plastic fiber scintillators to measure the 2D hit distribution of the bremsstrahlung photons. In 2015-2016 the first physics experiment has been performed using132Xe target, then the luminosity and angular distributions were successfully measured at the electron beam energy of 150-300 MeV, achieving a luminosity above 1027cm-2s-1. In this article, we present the performances of the WiSES and LMon detectors obtained by using the132Xe experiment data.

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    • The SCRIT electron scattering facility project at RIKEN RI beam factory

      T. Ohnishi, A. Enokizono, M. Hara, T. Hori, S. Ichikawa, K. Kurita, S. Matsuo, T. Suda, T. Tamae, M. Togasaki, K. Tsukada, T. Tsuru, S. Wang, S. Yoneyama, M. Wakasugi

      Physica Scripta2015   2015年11月1日

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      © 2015 The Royal Swedish Academy of Sciences. The self-confining RI target (SCRIT) electron scattering facility has been constructed at RIKEN RI Beam Factory. The commissioning experiment was performed, and the luminosity was achieved to around 1027cm-2s-1with stable ions at a 250 mA electron beam current. For the electron scattering with short-lived unstable nuclei, the radioactive isotope production was started at electron-beam-driven RI separator for SCRIT. Furthermore, new devices, the electron spectrometer window frame spectrometer for electron scattering and the cooler buncher system were constructed. After the setup of new devices, a first electron scattering experiment with short-lived nuclei will be performed soon.

      DOI: 10.1088/0031-8949/2015/T166/014071

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    • 29pHD-5 理研SCRIT施設における電子ビームRIセパレーターERISの開発(29pHD 加速器・イオン源・ターゲット,実験核物理領域)

      大西 哲哉, 市川 進一, 小泉 浩二, 足立 竜也, 天谷 達哉, 原 雅弘, 原口 祐司, 堀 利匡, 北沢 僚也, 栗田 和好, 宮下 裕二, 宮本 嵩也, 小川原 亮, 須田 利美, 島倉 優人, 竹原 広樹, 玉江 忠明, 玉木 聖一, 戸ヶ崎 衛, 柳 嘉代子, 王 碩, 若杉 昌徳

      日本物理学会講演概要集68 ( 1 ) 113 - 113   2013年3月26日

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

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    • 29pHD-6 SCRIT実験装置を用いたイオン捕獲実験(29pHD 加速器・イオン源・ターゲット,実験核物理領域)

      小川原 亮, 天谷 達哉, 市川 進一, 榎園 昭智, 榎本 彩乃, 大西 哲哉, 栗田 和好, 小泉 浩二, 島倉 優人, 須田 利美, 竹原 広樹, 玉江 忠明, 玉木 聖一, 戸ヶ崎 衛, 原 雅弘, 原口 祐司, 堀 利匡, 宮下 裕次, 宮本 嵩也, 柳 嘉代子, 山口 貴之, Wang Shuo, 若杉 昌徳

      日本物理学会講演概要集68 ( 1 ) 114 - 114   2013年3月26日

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

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    • 14aSA-8 SCRIT実験装置を用いたイオン捕獲実験(14aSA 測定器(III),実験核物理領域)

      戸ヶ崎 衛, 足立 竜也, 天谷 達哉, 市川 進一, 大西 哲哉, 小川原 亮, 栗田 和好, 須田 利美, 玉江 忠明, 原 雅弘, 堀 利匡, 宮本 嵩也, Wang Shuo, 若杉 昌徳

      日本物理学会講演概要集67 ( 2 ) 89 - 89   2012年8月24日

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      記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

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    • Progress in the R&amp;D experiments about a novel method of electron scattering off short-lived nuclei

      Shuo Wang, Shuo Wang, T. Suda, T. Suda, M. Wakasugi, T. Tamae, K. Kurita, A. Noda, T. Shirai, H. Tongu, Y. Yano

      Plasma Science and Technology14   419 - 420   2012年5月1日

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      A novel method has been established to realize the experiment of electron scattering off short-lived nuclei. The method was based on the well known &quot;ion trapping&quot; phenomenon in electron storage rings. In the R&amp;D experiments at Kyoto University, stable nucleus,133Cs, was employed as the target nucleus. The luminosity of scattering experiment was nearly 1026 cm-2s-1at electron beam current around 75 mA. The angular distribution of elastically scattered electrons from trapped Cs ions was measured and the result was well fitted by theoretical calculation. It was indicated that higher luminosity can be reached with larger electron beam current.

      DOI: 10.1088/1009-0630/14/5/19

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    • 不安定核電子散乱実験のためのISOL型イオン源の性能評価

      小泉浩二, 足立竜也, 天谷達哉, 市川進一, 大西哲哉, 小川原亮, 北沢遼也, 栗田和好, 須田利美, 竹原広樹, 玉江忠明, 玉木聖一, 戸ケ崎衛, LUNDKVIST Niklas, 原雅弘, 堀利匡, 宮下裕次, 宮本嵩也, WANG Shuo, 若杉昌徳

      日本物理学会講演概要集67 ( 1 ) 116   2012年3月5日

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      記述言語:日本語  

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    • SCRIT実験におけるイオン捕獲特性

      玉木聖一, 足立竜也, 天谷達哉, 市川進一, 大西哲哉, 小川原亮, 北沢僚也, 栗田和好, 小泉浩二, 須田利美, 竹原広樹, 玉江忠明, 戸ケ崎衛, LUNDKVIST Niklas, 原雅弘, 堀利匡, 宮下裕次, 宮本嵩也, WANG Shuo, 若杉昌徳

      日本物理学会講演概要集67 ( 1 ) 116   2012年3月5日

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    • 自己閉じ込め法(SCRIT)による短寿命不安定核電子散乱用の磁気分析器,検出器システム

      足立竜也, 須田利美, 玉江忠明, 天谷達哉, 市川進一, 大西哲哉, 小川原亮, 北沢僚也, 栗田和好, 小泉浩二, 竹原広樹, 玉木聖一, 戸ケ崎衛, LUNDKVIST Niklas, 原雅弘, 堀利匡, 宮下裕次, 宮本嵩也, WANG Shuo, 若杉昌徳

      日本物理学会講演概要集67 ( 1 ) 116   2012年3月5日

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    • 不安定核電子散乱実験のための自己閉じ込め型不安定核標的(SCRIT)を用いたイオン捕獲実験

      宮下裕次, 大西哲哉, 玉木聖一, 足立竜也, 市川進一, 大河原麻菜美, 小川原亮, 北沢僚也, 栗田和好, 小泉浩二, 須田利美, 竹原広樹, 玉江忠明, 戸ケ崎衛, LUNDKVIST Hiklas, 原雅弘, 堀利匡, SHUO Wang, 若杉昌徳

      日本物理学会講演概要集66 ( 2 ) 63   2011年8月24日

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      記述言語:日本語  

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    • SCRIT:RI・電子散乱実験装置の建設

      若杉昌徳, 宮下裕次, 戸ケ崎衛, 竹原広樹, 堀利匡, 原雅弘, 市川進一, 高橋弘範, 玉木聖一, 小泉浩二, 森屋誠, 浦野恭輔, 北沢僚也, 栗田和好, 玉江忠明, 須田利美

      加速器7 ( 4 ) 271-277   2011年1月31日

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    • 23aBD-5 直接反応を用いたN=20領域の中性子過剰核の高エネルギー分解能ガンマ線スペクトロスコピー(23aBD 理論核物理領域,実験核物理領域合同 不安定核II(合同),理論核物理領域)

      大田 晋輔, 橋本 佳子, 井手口 栄治, 家城 和夫, 岩佐 直仁, 岩崎 弘典, 菅野 祥子, 近藤 洋介, 久保 敏幸, 栗田 和好, 峯村 俊行, 下浦 享, 道正 新一郎, 本林 透, 村上 哲也, 中林 匠, 中村 隆司, 新倉 潤, 奥村 俊文, 大西 健夫, 櫻井 博儀, 篠原 摩有子, 青井 考, 鈴木 大介, 鈴木 賢, 玉城 充, 田中 鐘信, 栂野 泰宏, 若林 泰夫, 山田 一成, 竹下 英里, 武内 聡, 鈴木 宏, 馬場 秀忠, 福地 智則, 福井 利晃

      日本物理学会講演概要集65 ( 1 ) 60 - 60   2010年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.65.1.1.0_60_4

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    • 24aZF-3 ^<32>Mgのインビームγ線核分光(実験核物理領域,理論核物理領域合同,不安定核(合同)I,実験核物理領域)

      武内 聡, 近藤 洋介, 久保 敏幸, 栗田 和好, 峯村 俊行, 本林 透, 中林 彩, 中村 隆司, 奥村 俊文, 大西 健夫, 大田 晋輔, 青井 考, 櫻井 博儀, 下浦 享, 須合 亮平, 鈴木 大介, 鈴木 宏, 鈴木 賢, 竹下 英里, 玉城 充, 田中 鐘信, 栂野 泰宏, 馬場 秀忠, 山田 一成, 福井 利晃, 橋本 佳子, 家城 和夫, 今井 伸明, 岩崎 弘典, 菅野 祥子

      日本物理学会講演概要集63 ( 1 ) 72 - 72   2008年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.63.1.1.0_72_2

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    • 20aSC-12 陽子過剰核^<20>Mgのクーロン励起(20aSC 理論核物理領域,実験核物理領域合同 不安定核(反応と構造),理論核物理領域)

      岩佐 直仁, 久保野 茂, 栗田 和好, 黒川 明子, 松井 信行, 峯村 俊行, 森川 斉, 中村 隆司, 新倉 潤, 野谷 将広, 大田 晋輔, Bishop S., 斉藤 明登, 櫻井 博儀, 下浦 享, 菅原 浩介, 杉本 崇, 鈴木 宏, 鈴木 健, 谷畑 勇夫, 竹下 英里, 武内 聡, Elekes Z., 寺西 高, 栂野 泰宏, 山田 一成, 山口 考司, 柳沢 善行, 本林 透, Gibelin J., 細井 基興, 家城 和夫, 石川 和宏, 岩崎 弘典, 河合 祥子

      日本物理学会講演概要集61 ( 0 ) 3 - 3   2006年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.61.2.1.0_3_3

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    • 28pZL-1 ^<16>Cの陽子非弾性散乱2(理論核物理,実験核物理合同不安定核)(理論核物理)

      Ong H.J, Fulop Zs, Gibelin J, 五味 朋子, 長谷川 浩一, 石原 正泰, 岩崎 弘典, 菅野 祥子, 河合 祥子, 久保 敏幸, 栗田 和好, 今井 伸明, 松山 裕一, 道正 新一郎, 峯村 俊行, 本林 透, 野谷 将広, 大田 晋輔, 酒井 葉月, 下浦 享, 竹下 英里, 武内 聡, 青井 考, 玉城 充, 栂野 泰宏, 山田 一成, 柳澤 善行, 米田 健一郎, 櫻井 博儀, Dombradi Zs, 斎藤 明登, Elekes Z, 馬場 秀忠, 出道 仁彦

      日本物理学会講演概要集59 ( 1 ) 40 - 40   2004年

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      記述言語:英語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.59.1.1.0_40_1

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    • 9pSG-9 α非弾性散乱を用いた中性子過剰核 ^<22>O の励起状態の研究

      玉城 充, 久保野 茂, 栗田 和好, 黒川 明子, 齋藤 明登, 櫻井 博義, 武内 聡, 竹下 英里, 野谷 将広, 馬場 秀忠, 峯村 俊行, 下浦 享, 本林 透, 柳沢 善行, 吉田 敦, 岩崎 弘典, 道正 新一郎, 青井 考, 岩佐 直仁, 王 恵仁, 大田 晋輔, 菅野 祥子

      日本物理学会講演概要集58 ( 2 ) 26 - 26   2003年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.58.2.1.0_26_4

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    • 9pSG-5 陽子移行反応を用いた中性子過剰核 ^<23>F の研究

      道正 新一郎, 久保野 茂, 栗田 和好, 黒川 明子, 齋藤 明登, 櫻井 博儀, 武内 聡, 竹下 英里, 野谷 将広, 馬場 秀忠, 峯村 俊行, 下浦 享, 本林 透, 柳澤 善行, 吉田 敦, 岩崎 弘典, 玉城 充, 青井 考, 岩佐 直仁, 王 恵仁, 大田 晋輔, 菅野 祥子

      日本物理学会講演概要集58 ( 2 ) 25 - 25   2003年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.58.2.1.0_25_4

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    • 29pSA-12 クーロン励起法を用いた陽子過剰核 ^<46>Cr, ^<50>Fe, ^<54>Ni の B (E2) 測定

      山田 一成, 今井 伸明, 岩崎 弘典, 菅野 祥子, 久保 敏幸, 栗田 和好, 松山 裕一, 道正 新一郎, 峯村 俊行, 野谷 将広, 大西 健夫, 本林 透, Ong Hooi Jin, 大田 晋輔, 小沢 顕, 齋藤 明登, 櫻井 博儀, 下浦 享, 竹下 英里, 武内 聡, 玉城 充, 栂野 泰宏, 青井 考, 柳澤 善行, 米田 健一郎, 谷畑 勇夫, 馬場 秀忠, 出道 仁彦, Elekes Zoltan, Gibelin Julien, 五味 朋子, 長谷川 浩一

      日本物理学会講演概要集58 ( 1 ) 47 - 47   2003年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.58.1.1.0_47_3

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    • 29aSA-11 ^<16>C の陽子非弾性散乱

      Ong H. J., Fulop Zs., Gibelin J., 五味 朋子, 長谷川 浩一, 石原 正泰, 岩崎 弘典, 菅野 祥子, 河合 祥子, 久保 敏幸, 栗田 和好, 今井 伸明, 松山 裕一, 道正 新一郎, 峯村 俊行, 本林 透, 野谷 将広, 大田 晋輔, 酒井 葉月, 下浦 享, 竹下 英里, 武内 聡, 青井 考, 玉城 充, 栂野 泰宏, 山田 一成, 柳澤 善行, 米田 健一郎, 櫻井 博儀, Dombradi Zs., 齋藤 明登, Elekes Z., 馬場 秀忠, 出道 仁彦

      日本物理学会講演概要集58 ( 1 ) 43 - 43   2003年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.58.1.1.0_43_4

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    • 29aSA-4 ^<12>Be におけるアイソマ-状態の寿命測定

      出道 仁彦, 井手口 栄治, 石原 正泰, 岩佐 直仁, 岩崎 弘典, 菅野 祥子, 河合 祥子, 久保野 茂, 久保島 尚也, 栗田 和好, 黒川 明子, 下浦 享, 松山 裕一, 道正 新一郎, Miller Kathleen, 峯村 俊行, 村上 哲也, 野谷 将広, 小田原 厚子, 大田 晋輔, 齋藤 明登, 酒井 葉月, 本林 透, 櫻井 博儀, 竹下 英里, 武内 聡, 玉城 充, 寺西 高, 栂野 泰宏, 山田 一成, 柳沢 善行, 青井 考, 馬場 秀忠, Elekes Z., 福地 知則, 五味 朋子, 長谷川 浩一

      日本物理学会講演概要集58 ( 1 ) 42 - 42   2003年

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      記述言語:日本語   出版者・発行元:一般社団法人 日本物理学会  

      DOI: 10.11316/jpsgaiyo.58.1.1.0_42_2

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    ▼全件表示

    所属学協会

    • 2016年4月 - 現在 
      物理教育研究会(APEJ)

      詳細を見る

    • 2012年4月 - 現在 
      科学教育研究協議会 埼玉支部

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    •  
      日本物理教育学会

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    •  
      日本物理学会

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    共同研究・競争的資金等の研究

    • 理研SCRIT実験

      先端技術開発研究 

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      2003年4月 - 現在

      資金種別:競争的資金

      これまで標的を作ることができなかった不安定核標的を電子蓄積リングのビームのクーロンポテンシャルと電極によるミラーポテンシャルで3次元的にトラップして電子散乱に供するSCRITの開発に成功。 その装置を用いて実際に不安定核の電子散乱で不安定原子核の構造の謎に迫る。

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    • 電子散乱実験高精度化による不安定核物理の展開

      日本学術振興会  科学研究費助成事業 

      栗田 和好

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      2020年4月 - 2023年3月

      課題番号:20K04001

      配分額:4290000円 ( 直接経費:3300000円 、 間接経費:990000円 )

      2020年度は新型コロナ感染症の影響で当初目的であった開発が思うように進まず、トラップ終了後に残されたイオン分布の分析を行うことにより電子散乱に寄与する標的原子核の数を抑えるイオン分析器の分解能向上のためのR&Dを目指す軌道修正を行った。
      イオン分析器は電磁場を通過した後のイオンの到達点により質量電荷費を予想するシステムであるが、現状6mmごとの区画でしかイオン検出ができないため、特に多価のイオンの分離不能が生じてしまっている。そこで、分析可能なイオンの価数を+20価までに設定したうえで、MCPイオン検出器に分割電極読みだしを組み込むことにより位置分解能を2mmにまで向上させる開発を行った。
      電子回路の基板製作サービスを使って2mm間隔のストリップ電極を準備しMCPの読み出し電極と交換することで、イオンの検出信号を十分読み出せることを実証することに成功した。しかし、電極間の隙間が狭いためにヒットしたチャンネルの隣にも信号が見えてしまうクロストーク問題が発生した。そのクロストーク実測では真の信号に似た波形が最近接ストリップに確認できるもののヒットチャンネルに比べ25%程度の波高であることが分かり、真のヒットとクロストークの波高弁別が可能であることも示すことが出来た。
      2021年度も引き続き新型コロナ感染症の影響で研究室の滞在時間が短くなり、検出器に接する時間が限られ、開発の遅延の原因となった。その中でも新たに作成したストリップ電極読み出しの試行を完了した。また、イオン分析装置の有感領域である240x15mmを極力覆うMCPの入手を考え、イオンがほとんど到達しない場所にギャップをもうけ,100x15mmの矩形MCPを2つ組み合わせて測定が可能であることを見出し、センサーの発注を行った。

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    • RHIC PHENIX実験

      国際研究協力 

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      1993年4月 - 2017年10月

      資金種別:競争的資金

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    • 高密度中性子過剰核物質の状態方程式

      日本学術振興会  科学研究費助成事業 

      村上 哲也, 家城 和夫, 磯部 忠昭, 川畑 貴裕, 竹谷 篤, 溝井 浩, 栗田 和好, 馬場 秀忠

      詳細を見る

      2012年6月 - 2017年3月

      課題番号:24105004

      配分額:168740000円 ( 直接経費:129800000円 、 間接経費:38940000円 )

      超新星爆発の結果作られる中性子星の外核の熱力学性質、状態方程式(EOS)を地上実験で決定することを目指し、理化学研究所の放射性同位元素ビーム工場(RIBF)で加速される中性子を多く含む錫原子核を通常の錫原子核に正面衝突させる実験を行った。この実験で一時的に作られる高密度原子核物質の密度はちょうど中性子星の外核のものに対応している。作られた高密度核物質から放出される正負荷電パイ中間子を新たに開発した大型の時間射影型検出器で3次元的に捉え、予定を上回る統計のデータ収集に成功した。荷電パイ中間子の生成比のデータ解析は現在進行中で、間もなく高密度領域での中性子星物質EOSが抽出できる見通しである。

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    • 電子弾性散乱による短寿命不安定核の電荷密度分布測定

      日本学術振興会  科学研究費助成事業 

      須田 利美, 若杉 昌徳, 玉江 忠明, 栗田 和好, 宮下 裕次, 足立 竜也, 榎園 昭智, 塚田 暁

      詳細を見る

      2010年4月 - 2016年3月

      課題番号:22224004

      配分額:203060000円 ( 直接経費:156200000円 、 間接経費:46860000円 )

      本研究は、天然には存在しない短寿命で崩壊する不安定核の内部構造を、原子核内部構造の最も強力な研究手法である電子散乱により解明を目指すものである。不安定核構造の解明は、原子核物理学にとってはもちろんの事、宇宙での元素合成過程研究にも必須であるが、電子散乱による研究はあまりに困難であるため今までは不可能と考えられてきた。私達は、この壁を打ち破る短寿命不安定核の電子散乱による研究を可能にする革新的な実験技術、SCRIT法、を発明し、世界初の不安定核専用電子散乱施設を建設し研究を進めた。

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    • 不安定核研究の精密化に向けたMRFQクーラー・バンチャーの開発

      日本学術振興会  科学研究費助成事業 

      栗田和好

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      2012年4月 - 2015年3月

      担当区分:研究代表者  資金種別:競争的資金

      この研究はこれまで不可能と思われて世界でも例を見ない不安定核の電子散乱実験を実現するためのイオン濃縮装置の開発である。我々はイオンを加速装置内にとどめて電子散乱を実現できることを実証したが、その蓄積イオン濃度の向上が実験の成否のカギとなる。我々は最終的に電極のエッジ効果を利用したイオントラップに方針を切り替えて、目標の半分ほどのイオン濃度を実現することに成功した。

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    • 高速不安定核ビームを用いたp核生成にかかわる天体核反応断面積の決定

      日本学術振興会  科学研究費助成事業 

      米田 健一郎, 栂野 泰宏, 竹谷 篤, 栗田 和好, 西村 俊二

      詳細を見る

      2010年 - 2012年

      課題番号:22340072

      配分額:19240000円 ( 直接経費:14800000円 、 間接経費:4440000円 )

      本研究のねらいは、中性子欠損安定元素p核の起源を高速RI ビームの反応実験を通じて探索することである。このためには、約90mmx90mm の大きな有感領域をもったストリップシリコン検出器と、その読み出しの回路の開発が必要になる。とりわけ読み出し回路には、約5000倍の大ダイナミックレンジと、数千チャンネルを同時処理する高密度集積性が要請され。新規に開発が必要となる。本研究では、シリコンストリップ検出器、読み出し回路の設計開発を行い、要請を満たす回路の開発に成功した。

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    • 核力スピンフリップ振幅の原子核依存性の測定手法の確立

      日本学術振興会  科学研究費助成事業 

      栗田和好

      詳細を見る

      2008年4月 - 2011年3月

      課題番号:20540297

      担当区分:研究代表者  資金種別:競争的資金

      R&Dの対象として最難関の技術は光子のバックグラウンドが多い環境下での低エネルギーイオンを測定である。そのために、四重極電場で90度曲げてイオンをチャンネルトロンで捕らえる実験を行い反跳イオン検出器のデザインを完成した。現在他の予算を使い、反跳イオン検出器の建設に取り掛かっている。スピンフリップの実験が実現する前に、理化学研究所において電子散乱実験に組み込みその動作確認を行う予定である。

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    • 偏極陽子衝突を用いた核子スピン構造研究の新展開

      日本学術振興会  科学研究費助成事業 

      齊藤 直人, 村上 哲也, 村田 次郎, 竹谷 篤, 栗田 和好, 谷田 聖

      詳細を見る

      2006年 - 2010年

      課題番号:18GS0210

      配分額:262860000円 ( 直接経費:202200000円 、 間接経費:60660000円 )

      我々自身を含むすべての物質の基本構成要素である陽子の成り立ちを、素粒子の重要な性質である「スピン」という観点から理解する為、世界で唯一の偏極陽子衝突型加速器を用いた実験PHENIXに、必要事象のみを選択的に収集するシステムを構築した。このシステムにより、世界で初めて、偏極陽子衝突におけるウィークボゾン生成実験を実現し、陽子のスピン構造研究に「海クォークの直接測定」という新たな局面をもたらすことが出来た。

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    • 不安定核電荷分布測定のためのSCRITを用いた電子散乱実験

      日本学術振興会  科学研究費助成事業 

      若杉 昌徳, 栗田 和好, 野田 章, 白井 敏之, 頓宮 拓, 玉江 忠明

      詳細を見る

      2007年 - 2008年

      課題番号:19340073

      配分額:19240000円 ( 直接経費:14800000円 、 間接経費:4440000円 )

      短寿命不安定原子核の電荷分布を世界で初めて測定できる方法として、電子蓄積リングにおけるイオントラッピング現象を利用したSCRIT法を発明した。SCRITの原理実証を行うためプロトタイプを京都大学化学研究所の電子蓄積リングKSRに挿入して実験を行ってきた。その結果、わずか100万個のCs原子核を標的とした電子弾性散乱を起こさせ、その散乱断面積の測定に成功した。これによって数量の限られた短寿命不安定核の電子散乱実験法が確立した。

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    • 共同研究プロジェクト研究 電子ストーレジリング中での電子原子核弾性散乱実験手法の確立

      立教大学  立教大学学術推進特別重点資金(立教SFR) 

      詳細を見る

      2005年4月 - 2007年3月

      資金種別:競争的資金

      理化学研究所との協同研究プロジェクト

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    • 指向性γ線サーベイメータの開発

      東京都産業技術研究所・(株)クリアパレス  共同研究(国内共同研究) 

      詳細を見る

      2003年4月 - 2005年3月

      資金種別:競争的資金

      指向性γ線サーベイメータの開発

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    • 電子蓄積リングでの電子弾性散乱実験用検出器の開発

      日本学術振興会  科学研究費助成事業 

      須田 利美, 若杉 昌徳, 大西 哲哉, 竹田 浩之, 栗田 和好, 小関 忠, 山崎 寛仁, 濱 広幸

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      2003年 - 2004年

      課題番号:15340090

      配分額:16400000円 ( 直接経費:16400000円 )

      まったく前例のない電子散乱による短寿命不安定核の内部構造研究のための、新しい実験方法を我々は考え出した。電子蓄積リングで観測されるイオントラップ現象を利用し、蓄積電子リング内の電子ビーム上に外部から入射する短寿命不安定核の自己閉じこめ型浮遊標的(SCRIT : Selft-Confining RI Target)を作りだし、電子散乱実験を行おうとするものである。数値シミュレーションによれば、入射イオンを10^8/sec打ち込めば、10^<28>/cm^2/s以上という電子散乱実験には十分なルミノシティーが期待できる。
      平成15年度の科研費によりこの新しい方法を実証するための装置を製作し、既存の電子リング(京都大学KSR)に組み込んだ。今年度は、電子リングを運転し、電子ビームエネルギー100 MeV,蓄積電流80mAの条件下で本格的に実証実験を開始した。外部イオン源から安定核Csイオンを打ち込み、計算通り電子ビームにイオンが捕獲されるか、そしてそのルミノシティーを決定できるか、などの開発実験を行った。その結果、9月のテスト実験で、外部入射のCsイオンを数秒間捕獲することに世界で初めて成功した。ほぼ事前の計算通り、10^7ヶのイオンが電子ビームに捕獲されたことを確認した。計算上10^<26>/cm^2/sのルミノシティーが達成されていたことになる。
      短寿命不安定核との電子散乱実験を可能にするSCRIT法という新しい実験技術の確立に成功した。
      この成果は10月にイタリアで開催されたErice School on Nuclear Physics, "Lepton Scattering and the Structure of Hadrons and Nuclei"で招待講演として発表された。

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    • 高エネルギー重イオン反応におけるハドロン生成の研究

      日本学術振興会  科学研究費助成事業 

      三明 康郎, カレコフスキー H., 佐甲 博之, 西村 俊二, 八木 浩輔, KALECHOFSKY エイチ, NAYAK T.K, GUTBROD H, MARTIN M, 栗田 和好, NAYAK T.K., GUTBROD H., MARTIN M.

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      1995年 - 1997年

      課題番号:07044060

      配分額:12400000円 ( 直接経費:12400000円 )

      CERN(欧州共同原子核研究機構)における核子あたり160GeVのデータ収集はすべて完了し、当初計画通りに米国ブルックヘブン国立研究所におけるPHENIX実験に向けて飛行時間測定器の移動を行い、調整・補修,補充を行った.データ読み出しのシステム・テストを行った.
      本年度の主要な活動はデータ解析であった.まず、本科研費で製作した高時同分解能飛行時間測定器について目標としていた時間分解能80ピコ秒を達成しており、粒子識別も問題なく行えることが最終的に確認された.ジュネ-ブ大学の研究者を2名招聘することが出来、解析作業が飛躍的に改善することが出来た。本年度の中心課題である解析を推進した結果、核子あたり160GeV領域の原子核原子核衝突では初めてDirected Flowをが我々の観測によって初めて見つけることが出来た.流体力学的的振る舞いと考えられ、ビームエネルギー依存性の測定からQGPの発生の有無等の重要な性質が導き出せることとなった。これらの流体力学的解析から状態方程式に関する知見が得られれば、そのビームエネルギー依存性等から、鉛・鉛衝突におけるJ/Ψ抑制効果の異常から提唱されているクォークグルオンプラズマ生成の問題についても重要な結果が得られる。
      本研究分野の最も権威ある国際会議である高エネルギー原子核原子核衝突国際会議「クォーク物質'97」を平成9年の12月に筑波大学・大学会館にて開催した.本研究斑の八木とコロンビア大の永宮が組織委員長、本研究班の初田と本研究班代表の三明が事務局を務めた。本研究の結果について、平成9年3月、インドの国際会議における招待講演に引き続き、「クォーク物質'97」国際会議でも西村氏を初めとする4編の論文報告がなされ大きな反響が得られた。

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    • ハドロンの系統的測定によるクォークグルオンプラズマのプラズマのための基礎的研究

      日本学術振興会  科学研究費助成事業 

      三明 康郎, 西村 俊二, 栗田 和好, 八木 浩輔, 初田 哲男, 佐甲 博之, 新井 一郎

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      1994年 - 1997年

      課題番号:06102004

      配分額:225000000円 ( 直接経費:225000000円 )

      ビッグバン直後の宇宙は極めて高温・高密度状態にあったため、クォークとグルオンが自由に動き回れる状態、すなわちクォーク・グルオンプラズマ(QGP)状態が存在したと考えられている。物質の存在の在り方として全く未知なるQGPの研究をすることは、原子核や素粒子、初期宇宙、さらには自然認識にかかわる基本的課題である。QGP状態を実験室で作り出す唯一の方法である高エネルギー原子核・原子核衝突を用いて、(1)核子<10GeV、(2)核子あたり158GeV、(3)核子あたり100GeVの衝突型加速器における実験、において一連の測定を進めている。反応生成粒子の系統的測定による基礎的データの積み上げを行うことによってQGP生成の発見ならびにその性質の研究を目指している。主な研究成果は以下の通りである。
      1)世界初のパイプライン方式の高時間分解能読み出し回路を開発した。計画通り時間分解能85ピコ秒を得、高多重度下において粒子識別に成功した。
      2)製作した高時間分解能飛行時間測定器、読み出し回路をCERN・WA98実験に飛跡測定器と共に設置し、平成7〜8年度に1粒子包括測定、2粒子相関測定を行った。平成9年度までに核子あたり4GeVから160GeVの重イオン衝突についてハドロン及び光子の系統的測定を完了した。
      3)荷電粒子と光子の生成量相関の測定から、Disoriented Chiral Condensate効果の出現の有無の検証を行った。カイラル対称性回復を示唆する結果は得られていない。
      4)160AGeV重イオン衝突における集団運動を示す方位角相関の観測に成功した。集団運動の一つのモードであるDirected Flowは標準模型(RQMD)の約半分の強度であることが確認された。QGPの兆候である状態方程式の変化を示唆している可能性がある。他の集団運動モードであるElliptic Flow解析では、K+中間子は標準模型の反対の符号を持つことを示唆する結果となった。いずれも世界初の分析結果である。
      5)高温高密度状態におけるハドロンの振る舞い、ファイ中間子等の振る舞いの変化に関する理論的研究。

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    • クォーク・グルオンプラズマ検出用大型スペトロメータの開発研究

      日本学術振興会  科学研究費助成事業 

      八木 浩輔, NAYAK T, ZAJC W.A., NAGAMIYA S, 富沢 和之, 栗田 和好, 新井 一郎, 三明 康郎, T NAYAK, W A ZAJC, S NAGAMIYA

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      1992年 - 1993年

      課題番号:04044031

      配分額:12300000円 ( 直接経費:12300000円 )

      本研究の目的は、ビッグバン宇宙の初期にその存在が理論的に推定されているクォーク・グルオンプラズマ(QGP)を、地上の実験室で高エネルギー重イオン正面衝突により初めて生成し、それを検出するための大型スペクトロメータの開発である。核子あたり約100Gevのエネルギーを持つ、例えば、金の原子核同士が正面衝突すると、1回の衝突で約5000個の高エネルギー荷電粒子が発生する。これらの粒子を識別して運動量分析の後、計数することは、バックグラウンドの除去や装置の分割数等に関して、これまでの原子核実験や素粒子実験では経験したこともない諸々な技術的な問題を解決しなければならない。
      上記の条件を満たす世界最初の相対論的重イオン衝突型加速器RHICが米国ブルックヘブン国立研究所(BNL)で1998年完成を目指して建設中である。この時期に筑波大グループは米国コロンビア大グループ等にと共同して、QGP検出を目的とする大型スペクトロメータPHENIXの建設を提案した。QGPのシグナルは数種類期待されるが、本研究では特に放出ハドロンのチャンネルに注目し、それらを識別・検出する技術開発をおこなった。その際、対象となるハドロンの運動量が0.5〜2.5GeV/c程度と考えられるので、粒子識別方法として最も有効な方法が、高時間分解能飛行時間測定装置(TOF)である。その検出器部分の開発を筑波大グループが、エレクトロニクス部分の開発をコロンビア大グループがそれぞれ担当した。
      2.5GeV/c以下のπ中間子とK中間子をTOF法で十分分離するためには、PHENIXスペクトロメータに於けるTOF距離を5mとすると時間分解能σ≦100ピコ秒(ps)が優に必要である。この条件の下にさらに、PHENIXにおける前述の生成荷電粒子多重度、立体角、他の検出器との配置のかね合い等から、TOFのシンチレータの形状、大きさが決定された。それは長さが1〜3m,幅と厚さが約1cm程度と特異な形状のものであった。この条件下で時間分解能σ≦100psを達成するためには、以下の様な工夫及びシンチレーターの特性等に関する基本的なテスト及び考察が不可欠であった:
      1.時間分解能を決める要素の一つとして、光電子増倍管からの信号の立ち上がり時間がある。その最小の立ち上がり時間を得るために光電子増倍管直結型ディスクリミネーター(オンチューブディスクリミネーター)を開発、導入した。レーザーによるテスト及び最小電離ビームによるテストの結果、入力信号の傾きが70%に改善された。
      2.プラスチックシンチレーターの素材、形状(ファイバー状、バルク状等々)のテスト。
      3.3m長のシンチレーターを利用して、その光量(パルス高)と時間分解能との入射粒子(レーザー光)との位置依存性をそれぞれ測定した結果、両者共に距離の指数関数となり、その指数係数の関係から光量減衰長と時間分解劣化長とはきれいに2倍の関係にあることが判明した。この事実は、時間分解能が光量(光子数)の統計的ばらつきによって決定されると考えれば直ちに理解できる。
      4.上記の結果を生かして、素材BC404(バイクロン社)の50cm長、1.2cm×1.2cm断面のプラスチックシンチレーター100本と各々にオンチューブディスクリミネーターを装填した100組のTOF装置を試作した。BNLにおけるビームテストの結果、時間分解能σ〜55psが得られ、かつ時間分布関数は3桁近くの範囲にわたってきれいなガウス分布を示した。この系は直ちにAGSの核子当たり11GeVの固定標的による金+金の反応実験に利用されたが、同時にRHIC-PHENIXスペクトロメーターのTOF装置建設の基盤を十分与えるものとなった。以上の結果は、ジャーナルNuclear Instruments and Methodsに2部に分けて投稿すべく準備中である。さらにまた、我々の開発した飛行時間測定の技術の応用として、従来は光電子や電子の粒子識別やエネルギー測定に用いられてきた電磁カロリメーターを改良して、ハドロンの識別、測定にも適用できる可能性が開かれた。

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    • 放射線計測器、粒子検出器開発

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      資金種別:競争的資金

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    • 大学の物理教育研究会(UPEC)

      2014年12月 - 現在

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      大学の物理教育の改善に向けた詳細な議論を行なう

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