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2010 Fiscal Year Annual Research Report

ジェット識別測定によるクォーク・グルーオンプラズマ物性の研究

Research Project

Project/Area Number 20224014
Research InstitutionUniversity of Tsukuba

Principal Investigator

三明 康郎  筑波大学, 大学院・数理物質科学研究科, 教授 (10157422)

Co-Investigator(Kenkyū-buntansha) 江角 晋一  筑波大学, 大学院・数理物質科学研究科, 准教授 (10323263)
中條 達也  筑波大学, 大学院・数理物質科学研究科, 講師 (70418622)
稲葉 基  筑波技術大学, 産業技術部, 准教授 (80352566)
濱垣 秀樹  東京大学, 理学(系)研究科(研究院), 准教授 (90114610)
Keywordsクォーク・グルーオンプラズマ / 相対論的重イオン衝突 / パートン
Research Abstract

RHIC実験からQGP生成の確証を掴み、QGP物性の理解のフェーズに移りつつある。QGP物性の理解に最も直接的な測定は、JetのModificationの観測である。我々はRHICのデータ解析を推進すると共に、LHC-ALICE共同実験でのジェット識別測定を強化するカロリメータを提案し、本経費によって推進している。我々が提案した新たな電磁カロリメータ(Di-jet Calorimeter)は、日本、米国、フランス、イタリア、中国の各研究機関よりなる、国際協力研究である。この国際協力の実現によって、本経費当初計画でカバーしうる4倍の立体角の検出器が建設可能となり、測定可能なジェットのエネルギー範囲を拡大することができることとなった。平成21年度~22年度には、各国の研究者と協力して電磁カロリメータの建設を進めた。平成22年度では、我々が製作を分担している検出器分の部品購入を完了した。平成22年10月からは筑波大学において部品の組立てを開始し、平成23年2月に全数の1/3をフランス・ナントに輸送した。また同時に1/3の部品をイタリアに送り、現地に2名(博士研究員1名、院生1名)を派遣し、組み立てを完了した。残り1/3については平成23年4月中に完成する予定であったが、東日本大震災の影響により遅延した(部品の一部損壊)。来年度では残り1/3の検出器の製作を完了し、フランスに輸送し、全数をインストール可能な状態する予定である。またLHC-ALICE実験では、鉛衝突や陽子衝突の実データが順調に取得されている。これらのデータを使ったジェットの解析を推進しつつ、新たなカロリメータによるジェット測定に備える。

  • Research Products

    (40 results)

All 2011 2010 Other

All Journal Article (24 results) (of which Peer Reviewed: 24 results) Presentation (15 results) Remarks (1 results)

  • [Journal Article] Nuclear modification factors of phi mesons in d+Au, Cu+Cu and Au+Au collisions at sgrt(S_NN)=200 GeV.2011

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: C83 Pages: 024909:1-11

    • Peer Reviewed
  • [Journal Article] Cross Section and Parity Violating Spin Asymmetries of Wア Boson Production in Polarized p+p Collisions at s√=500 GeV.2011

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 106 Pages: 062001:1-6

    • Peer Reviewed
  • [Journal Article] Cross section and double helicity asymmetry for Tj mesons and their comparison to neutral pion production in p+p collisions at sgrt(s)=200GeV.2011

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: D83 Pages: 032001:1-10

    • Peer Reviewed
  • [Journal Article] Suppression of Charged Particle Production at Large Transverse Momentum in Central Pb-Pb Collisions at sNN ---=2.76 TeV.2011

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      Phys.Lett.

      Volume: B696 Pages: 30-39

    • Peer Reviewed
  • [Journal Article] A Reaction Plane Detector for PHENIX at RHIC.2011

    • Author(s)
      E.Richardson, et al.
    • Journal Title

      Nucl.Instrum.Meth.

      Volume: A636 Pages: 99-107

    • Peer Reviewed
  • [Journal Article] Centrality dependence of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at sqrt(sNN) = 2.76 TeV.2011

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 106 Pages: 032301:1-10

    • Peer Reviewed
  • [Journal Article] Two-pion Bose-Einstein correlations in central Pb-Pb collisions at sqrt(sNN) = 2.76 TeV.2011

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      Phys.Lett.

      Volume: B696 Pages: 328-337

    • Peer Reviewed
  • [Journal Article] Transverse momentum dependence of J/psi polarization at midrapidity in p+p collisions at s**(1/2) = 200-GeV.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: D82 Pages: 012001:1-17

    • Peer Reviewed
  • [Journal Article] Alignment of the ALICE Inner Tracking System with cosmic-ray tracks.2010

    • Author(s)
      ALICE Collaboration (K Aamodt, et al.)
    • Journal Title

      JINST

      Volume: 5 Pages: 03003:1-37

    • Peer Reviewed
  • [Journal Article] Trends in Yield and Azimuthal Shape Modification in Dihadron Correlations in Relativistic Heavy Ion Collisions.2010

    • Author(s)
      The PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 104 Pages: 252301:1-6

    • Peer Reviewed
  • [Journal Article] Elliptic and hexadecapole flow of charged hadrons in Au+Au collisions at sgrt(s_NN) = 200 GeV.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 105 Pages: 062301:1-6

    • Peer Reviewed
  • [Journal Article] Charged-particle multiplicity measurement in proton-proton collisions atsqrt(s) = 7 TeV with ALICE at LHC.2010

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      EurPhys.J.

      Volume: C68 Pages: 345-354

    • Peer Reviewed
  • [Journal Article] Charged-particle multiplicity measurement in proton-proton collisions at sqrt(s) = 0.9 and 2.36 TeV with ALICE at LHC.2010

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      EurPhys.J.

      Volume: C68 Pages: 89-108

    • Peer Reviewed
  • [Journal Article] Measurement of neutral mesons in p+p collisions at (√s)= 200 GeV and scaling properties of hadron production.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: D83 Pages: 052004:1-28

    • Peer Reviewed
  • [Journal Article] Transverse momentum dependence of meson suppression η suppressionin Au+Au collisions at √sNN = 200 GeV.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: C82 Pages: 011902:1-7

    • Peer Reviewed
  • [Journal Article] High pT direct photon and πO triggered azimuthal jet correlations and measurement of kT for isolated direct photons in p+p collisions at sqrts=200 GeV.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: D82 Pages: 072001:1-18

    • Peer Reviewed
  • [Journal Article] Azimuthal anisotropy of neutral pion production in Au+Au collisions at(√sNN) = 200 GeV : Path-length dependence of jet quenching and the role of initial geometry.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 105 Pages: 142301:1-6

    • Peer Reviewed
  • [Journal Article] Midrapidity antiproton-to-proton ratio in pp collisions at s√=0.9 and 7-TeV measured by the ALICE experiment.2010

    • Author(s)
      ALICE Collaboration (Authors::K.Aamodt, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 105 Pages: 072002:1-12

    • Peer Reviewed
  • [Journal Article] Transverse momentum spectra of charged particles in proton-proton collisions at s√=900'GeV with ALICE at the LHC.2010

    • Author(s)
      ALICE Collaboration (K Aamodt, et al.)
    • Journal Title

      Phys.Lett.

      Volume: B693 Pages: 53-68

    • Peer Reviewed
  • [Journal Article] Two-pion Bose-Einstein correlations in pp collisions at sgrt(s)=900 GeV.2010

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      Phys.Rev.

      Volume: D82 Pages: 052001:1-13

    • Peer Reviewed
  • [Journal Article] Elliptic Flow of Charged Particles in Pb-Pb Collisions at √sNN=2.76 TeV2010

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      Phys.Rev.Lett

      Volume: 105 Pages: 252302:1-11

    • Peer Reviewed
  • [Journal Article] Measurement of Transverse Single-Spin Asymmetries for J/psi Production in Polarized p+p Collisions at sqrt(s) = 200 GeV.2010

    • Author(s)
      PHENIX Collaboration (A.Adare, et al.)
    • Journal Title

      Phys.Rev.

      Volume: D82 Pages: 112008:1-13

    • Peer Reviewed
  • [Journal Article] Charged-particle multiplicity density at mid-rapidity in central Pb-Pb collisions at sqrt(sNN) = 2.76 TeV.2010

    • Author(s)
      The ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 105 Pages: 252301:1-6

    • Peer Reviewed
  • [Journal Article] Femtoscopy of pp collisions at sgrt{s}=0.9 and 7 TeV at the LHC with two-pion Bose-Einstein correlations.2010

    • Author(s)
      ALICE Collaboration (K.Aamodt, et al.)
    • Journal Title

      CERN-PH-EP

      Volume: 2010-083 Pages: 1-21

    • Peer Reviewed
  • [Presentation] ALICE activities at Tsukuba2011

    • Author(s)
      三明康郎
    • Organizer
      The workshop for ALICE upgrades by Asian countries(2011)
    • Place of Presentation
      Yonsei University, Seoul, Korea (招待講演)
    • Year and Date
      20110307-20110308
  • [Presentation] Elliptic and triangular flow measurements2011

    • Author(s)
      江角晋一
    • Organizer
      The workshop for ALICE upgrades by Asian countries(2011)
    • Place of Presentation
      Yonsei University, Seoul, Korea (招待講演)
    • Year and Date
      20110307-20110308
  • [Presentation] ALICE v2 and RHIC v2 results2011

    • Author(s)
      下村真弥
    • Organizer
      The workshop for ALICE upgrades by Asian countries(2011)
    • Place of Presentation
      Yonsei University, Seoul, Korea (招待講演)
    • Year and Date
      20110307-20110308
  • [Presentation] Long range rapidity correlations in high energy nucleus collision at RHIC and LHC2011

    • Author(s)
      轟木貴人
    • Organizer
      11st Heavy Ion Pub
    • Place of Presentation
      Osaka University (招待講演)
    • Year and Date
      2011-02-18
  • [Presentation] Recent Results from PHENIX2010

    • Author(s)
      江角晋一
    • Organizer
      The 3rd Asian Triangle Heavy-Ion Conference
    • Place of Presentation
      Wuhan, China (招待講演)
    • Year and Date
      20101017-20101020
  • [Presentation] DCal for the ALICE experiment at LHC2010

    • Author(s)
      中條達也
    • Organizer
      The 3rd Asian Triangle Heavy-lon Conference
    • Place of Presentation
      Wuhan, China (招待講演)
    • Year and Date
      20101017-20101020
  • [Presentation] Nuclear Physics at Univ.of Tsukuba2010

    • Author(s)
      三明康郎
    • Organizer
      International Symposium on Nuclear Physics in Asia
    • Place of Presentation
      Beihang University, Beijing, China (招待講演)
    • Year and Date
      20101014-20101015
  • [Presentation] AHCE実験測定器の現状2010

    • Author(s)
      中條達也
    • Organizer
      日本物理学会 2010年秋季大会シンポジウム「LHC加速器ALICE実験によるハドロン物理の幕開け」
    • Place of Presentation
      九州工業大学戸畑キャンバス
    • Year and Date
      20100911-20100914
  • [Presentation] Study of di-jet properties in p+p collisions at sgrt(s)=7 TeV by the LHC-ALICE experiment2010

    • Author(s)
      中條達也
    • Organizer
      日本物理学会 2010年秋季大会
    • Place of Presentation
      九州工業大学戸畑キャンバス
    • Year and Date
      20100911-20100914
  • [Presentation] Measurement of jet property via di-hadron correlation in p+p collisionsat LHC-ALICE2010

    • Author(s)
      佐野正人
    • Organizer
      日本物理学会 2010年秋季大会
    • Place of Presentation
      九州工業大学戸畑キャンパス
    • Year and Date
      20100911-20100914
  • [Presentation] Systematic study of v2 at 62.4 and 200 GeV in Cu+Cu and Au+Au Collisions at RHIC-PHENIX2010

    • Author(s)
      下村真弥
    • Organizer
      Hot Quarks 2010
    • Place of Presentation
      La Londe Les Maures, French Riviera, France (招待講演)
    • Year and Date
      20100621-20100626
  • [Presentation] KT and quark number scaling of v22010

    • Author(s)
      下村真弥
    • Organizer
      Exotics from Heavy Ion Collisions
    • Place of Presentation
      Yukawa Institute for Theoretical Physics, Kyoto, Japan (招待講演)
    • Year and Date
      20100507-20100520
  • [Presentation] v3 measurement at RHIC-PHENIX2010

    • Author(s)
      江角晋一
    • Organizer
      27th Winer Workshop on Nuclear Dynamics(WWND2011)
    • Place of Presentation
      Winter Park Colorad, USA (招待講演)
    • Year and Date
      20100206-20100213
  • [Presentation] Recent jet correlation analysis at RHIC and LHC2010

    • Author(s)
      江角晋一
    • Organizer
      第10回Heavy Ion Cafe
    • Place of Presentation
      東京大学理学部(本郷) (招待講演)
    • Year and Date
      2010-10-30
  • [Presentation] RHIC実験のこれまでの成果と今後の展望2010

    • Author(s)
      三明康郎
    • Organizer
      新学術領域研究(研究領域提案型) 「素核宇宙融合による計算科学に基づいた重層的物質構造の解明」計画研究AO1班「量子色力学にもとづく真空構造とクォーク力学」第3回研究会
    • Place of Presentation
      筑波大学計算科学研究センター (招待講演)
    • Year and Date
      2010-07-07
  • [Remarks]

    • URL

      http://utkhii.px.tsukuba.ac.jp/

URL: 

Published: 2012-07-19  

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