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2016 Fiscal Year Annual Research Report

Study of particle-jet azimuthal correlations for gluon shock-wave search

Research Project

Project/Area Number 25287048
Research InstitutionUniversity of Tsukuba

Principal Investigator

三明 康郎  筑波大学, 数理物質系(副学長), 副学長 (10157422)

Co-Investigator(Kenkyū-buntansha) 江角 晋一  筑波大学, 数理物質系, 准教授 (10323263)
中條 達也  筑波大学, 数理物質系, 講師 (70418622)
Project Period (FY) 2013-04-01 – 2017-03-31
Keywordsクォーク・グルオンプラズマ / 高エネルギー原子核・原子核衝突 / ジェット / 方位角相関 / LHC / ALICE実験
Outline of Annual Research Achievements

LHC加速器Run-2(第2期実験期間)において、 13 TeV陽子・陽子衝突および陽子・鉛衝突 (5 TeV および 8 TeV) の測定を実施し、我々が建設した EMCal/ DCal 電磁カロリメータ検出器、および同検出器の Level-1 ジェット・光子のトリガーシステムは順調に稼働し、物理データ収集に成功した。データ解析においては、2015年に取得した物理データ(鉛-鉛および陽子-陽子衝突 5.02 TeV)を用いて、日仏中3カ国チームの共同研究により、ジェットに関する解析を進めた。
2016年9月に国際会議Hard Probe 2016(中国、武漢)にて、ALICE実験を代表して横山広樹(筑波大 D3)が口頭発表を行った。また細川律也(筑波大, D2)がポスター発表を行った。世界最高エネルギーである5.02 TeV重イオン衝突エネルギーにおいても大きなジェット抑制が観測され、 2.76 TeVの同衝突系と同程度のパートン・エネルギー損失があることが確認された。また陽子・陽子衝突においては、量子色力学計算“POWHEG” がよくデータを再現していることがわかった。現在、学術論文として投稿準備を進めている。同時に、Run-2 のおける EMCal/DCal/ PHOS 検出器を駆使したダイジェット測定、ハドロン-ジェット相関測定も開始し、解析が進んでいる。
2016年5月末、国際研究集会「ALICE カロリメータ・解析ワークショップ」を東京で共催した(日仏蘭中韓露印からの研究者32名)。ジェット・光子・ハドロンに関する成果報告と討論を行った。
横山広樹(筑波大 D3)は、ジェット解析および ALICE Level-1 トリガー開発の功績により、第2回 TYL-FJPPL Young Investigator Award を受賞した (2017年3月)。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Causes of Carryover

28年度が最終年度であるため、記入しない。

Expenditure Plan for Carryover Budget

28年度が最終年度であるため、記入しない。

  • Research Products

    (28 results)

All 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (19 results) (of which Int'l Joint Research: 19 results,  Peer Reviewed: 19 results,  Open Access: 19 results) Presentation (5 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (2 results)

  • [Int'l Joint Research] CERN(欧州共同原子核研究機構)(スイス)

    • Country Name
      SWITZERLAND
    • Counterpart Institution
      CERN(欧州共同原子核研究機構)
  • [Int'l Joint Research] LPSCグルノーブル研究所(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      LPSCグルノーブル研究所
  • [Journal Article] J/psi suppression at forward rapidity in Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV2017

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Lett.

      Volume: 766 Pages: 212-224

    • DOI

      10.1016/j.physletb.2016.12.064

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Jet-like correlations with neutral pion triggers in pp and central Pb-Pb collisions at 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Lett. B

      Volume: 763 Pages: 238-250

    • DOI

      10.1016/j.physletb.2016.10.048

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      JHEP

      Volume: 1609 Pages: 164

    • DOI

      10.1007/JHEP09(2016)164

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      JHEP

      Volume: 1609 Pages: 028

    • DOI

      10.1007/JHEP09(2016)028

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] D-meson production in p-Pb collisions at sqrt(s_NN) = 5.02 TeV and in pp collisions at sqrt(s) = 7 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev.C

      Volume: 94 Pages: 054908

    • DOI

      10.1103/PhysRevC.94.054908

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pseudorapidity dependence of the anisotropic flow of charged particles in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Lett. B

      Volume: 762 Pages: 376-388

    • DOI

      10.1016/j.physletb.2016.07.017

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correlated event-by-event fluctuations of flow harmonics in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 117 Pages: 182301

    • DOI

      10.1103/PhysRevLett.117.182301

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of transverse energy at midrapidity in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev. C

      Volume: 94 Pages: 034903

    • DOI

      10.1103/PhysRevC.94.034903

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Centrality dependence of charged jet production in p-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Eur.Phys.J. C

      Volume: 76 Pages: 271

    • DOI

      10.1140/epjc/s10052-016-4107-8

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Centrality dependence of ψ(2S) suppression in p-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      JHEP

      Volume: 1606 Pages: 050

    • DOI

      10.1007/JHEP06(2016)050

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of D-meson production versus multiplicity in p-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      JHEP

      Volume: 1608 Pages: 078

    • DOI

      10.1007/JHEP08(2016)078

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anisotropic flow of charged particles in Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 116 Pages: 132302

    • DOI

      10.1103/PhysRevLett.116.132302

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Production of K*(892)^0 and & phi(1020) in p-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Eur.Phys.J. C

      Volume: 76 Pages: 245

    • DOI

      10.1140/epjc/s10052-016-4088-7

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse momentum in p-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Lett. B

      Volume: 760 Pages: 720-735

    • DOI

      10.1016/j.physletb.2016.07.050

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multipion Bose-Einstein correlations in pp,p -Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev. C

      Volume: 93 Pages: 054908

    • DOI

      10.1103/PhysRevC.93.054908

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multi-strange baryon production in p-Pb collisions at at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Lett. B

      Volume: 758 Pages: 389-401

    • DOI

      10.1016/j.physletb.2016.05.027

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 116 Pages: 222302

    • DOI

      10.1103/PhysRevLett.116.222302

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev. C

      Volume: 93 Pages: 044903

    • DOI

      10.1103/PhysRevC.93.044903

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of an excess in the yield of J/psi at very low pT in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV2016

    • Author(s)
      J. Adam,,, T. Chujo, S. Esumi, Y. Miake et al. (ALICE Collaboration)
    • Journal Title

      Phys.Rev.Lett.

      Volume: 116 Pages: 222301

    • DOI

      10.1103/PhysRevLett.116.222301

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Azimuthally differential pion femtoscopy with respect to second and third order event plane and the deformation of the source with event shape engineering in Pb-Pb 2.76 TeV2017

    • Author(s)
      N. Tanaka
    • Organizer
      Quark Matter 2017
    • Place of Presentation
      Hyatt Regency Chicago, Chicago, USA
    • Year and Date
      2017-02-06 – 2017-02-11
    • Int'l Joint Research
  • [Presentation] Measurements of charged jet spectra in pp and PbPb collisions at sqrt(s_NN) = 5.02 TeV with ALICE2017

    • Author(s)
      R. Hosokawa
    • Organizer
      Quark Matter 2017
    • Place of Presentation
      Hyatt Regency Chicago, Chicago, USA
    • Year and Date
      2017-02-06 – 2017-02-11
    • Int'l Joint Research
  • [Presentation] Measurement of Inclusive Charged Jet Production in pp and Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV with ALICE2016

    • Author(s)
      H. Yokoyama
    • Organizer
      Hard Probes 2016
    • Place of Presentation
      Wuhan, China
    • Year and Date
      2016-09-22 – 2016-09-27
    • Int'l Joint Research
  • [Presentation] Measurement of inclusive charged jet cross section in pp collisions at sqrt(s) = 5.02 TeV with ALICE at the LHC2016

    • Author(s)
      R. Hosokawa,
    • Organizer
      Hard Probes 2016
    • Place of Presentation
      Wuhan, China
    • Year and Date
      2016-09-22 – 2016-09-27
    • Int'l Joint Research
  • [Presentation] HAD_01: Measurements of Jets and Photons in Heavy Ion Collisions at the Highest Beam Energy during the LHC-Run 2 by ALICE2016

    • Author(s)
      T. Chujo
    • Organizer
      2016 Joint Workshop of the France-Korea (FKPPL) and France-Japan (TYL/FJPPL)
    • Place of Presentation
      Korea Institute for Advanced Study, Seoul, Korea
    • Year and Date
      2016-05-18 – 2016-05-18
    • Int'l Joint Research / Invited
  • [Remarks] 筑波大学高エネルギー原子核実験グループ

    • URL

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

  • [Remarks] ALICE実験日本グループ

    • URL

      http://alice-j.org/

URL: 

Published: 2018-01-16  

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