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2019 Fiscal Year Annual Research Report

Search of Gluon Shockwave with Di Jets detection

Research Project

Project/Area Number 17H02876
Research InstitutionUniversity of Tsukuba

Principal Investigator

三明 康郎  筑波大学, 数理物質系, 教授 (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) 2017-04-01 – 2020-03-31
Keywordsクォークグルオンプラズマ / 高エネルギー原子核実験
Outline of Annual Research Achievements

本科研費の最終年度として論文作成に注力した。主要4件について紹介する。
・平成30年度の筑波大学数理物質科学研究科細川律也氏の博士論文からPhys.Rev. D100 (2019) no.9, 092004が出版された。陽子・陽子衝突√s=5.02 TeVにおける荷電粒子を用いたジェット解析を行い、pQCD模型との精密な比較を行った。鉛・鉛衝突におけるQGP中の パートンのエネルギー損失の解析との精密な比較検証に重要な役割を果たす。細川律也氏は2020 FJPPL Young Investigator Award(日仏素粒子物理学研究所)を受賞した。
・QGP中の パートンのエネルギー損失の解析として、世界最高エネルギーの鉛・鉛衝突におけるheavy quark由来の電子の解析を行った。陽子・陽子衝突の重ね合わせに比べて明らかにエネルギー損失が認められQGP生成の証拠と矛盾しない。(Phys.Lett. B804 (2020) 135377)
・上述のheavy quarkのエネルギー損失効果について、Cold nuclear effectを明らかにするために、陽子・鉛衝突において解析を行った。その結果、陽子・陽子衝突の重ね合わせと一致し、Cold nuclear effectは無視できることがわかった。鉛・鉛衝突で観測された結果はQGPに起因することが明確となった。(JHEP 2002 (2020) 077)
・世界最高エネルギーの鉛・鉛衝突および陽子・陽子衝突におけるフルジェット解析に成功した。荷電粒子および電磁カロリメータによる中性粒子からジェット解析を行い、同一エネルギーにおける陽子・陽子衝突との比較検証からQGP中のパートンのエネルギー損失を明らかにした。理論模型との比較を行った。(Phys.Rev. C101 (2020) no.3, 034911)

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (20 results)

All 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (9 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (6 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] グルノーブル大学/ナント大学/ストラスブルグ大学(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      グルノーブル大学/ナント大学/ストラスブルグ大学
    • # of Other Institutions
      5
  • [Int'l Joint Research] ユトレヒト大学/NIKHEEF(オランダ)

    • Country Name
      NETHERLANDS
    • Counterpart Institution
      ユトレヒト大学/NIKHEEF
  • [Int'l Joint Research] ハイデルベルグ大学/ダルムシュタット工科大学/ミュンヘン工科大学(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      ハイデルベルグ大学/ダルムシュタット工科大学/ミュンヘン工科大学
    • # of Other Institutions
      9
  • [Journal Article] Measurement of electrons from heavy-flavour hadron decays as a function of multiplicity in p-Pb collisions at sNN$$ \sqrt{s_{\mathrm{NN}}} $$ = 5.02 TeV2020

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Journal of High Energy Physics

      Volume: 2020 Pages: 077

    • DOI

      10.1007/JHEP02(2020)077

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb?Pb collisions at sNN=5.02 TeV2020

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Physics Letters B

      Volume: 804 Pages: 135377~135377

    • DOI

      10.1016/j.physletb.2020.135377

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurements of inclusive jet spectra in pp and central Pb-Pb collisions at sNN=5.02TeV2020

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Physical Review C

      Volume: 101 Pages: 034911

    • DOI

      10.1103/PhysRevC.101.034911

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Exploration of jet substructure using iterative declustering in pp and Pb?Pb collisions at LHC energies2020

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Physics Letters B

      Volume: 802 Pages: 135227~135227

    • DOI

      10.1016/j.physletb.2020.135227

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the inclusive isolated photon production cross section in $$\text{ p }\text{ p }$$pp collisions at $$\sqrt{s}=7$$s=7 TeV2019

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      The European Physical Journal C

      Volume: 79 Pages: 896

    • DOI

      10.1140/epjc/s10052-019-7389-9

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of charged jet cross section in pp collisions at s=5.02??TeV2019

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Physical Review D

      Volume: 100 Pages: 092004:1~22

    • DOI

      10.1103/PhysRevD.100.092004

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the production of charm jets tagged with D0 mesons in pp collisions at s=7$$ \sqrt{\mathrm{s}}=7 $$ TeV2019

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Journal of High Energy Physics

      Volume: 1908 Pages: 133

    • DOI

      10.1007/JHEP08(2019)133

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurement of jet radial profiles in Pb?Pb collisions at sNN=2.76 TeV2019

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Physics Letters B

      Volume: 796 Pages: 204~219

    • DOI

      10.1016/j.physletb.2019.07.020

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiplicity dependence of light-flavor hadron production in pp collisions at s=7TeV2019

    • Author(s)
      S. Acharya, T. Chujo, R.Hosokawa, M. Inaba, Y. Miake, et.al. (ALICE Collaboration)
    • Journal Title

      Physical Review C

      Volume: 99 Pages: 012016:1~16

    • DOI

      10.1103/PhysRevC.99.024906

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Recent results on hard probes in heavy-ion collisions from ALICE and LHCb2019

    • Author(s)
      細川律也
    • Organizer
      7th Edition of the Large Hadron Collider Physics Conference (LHCP 2019)
    • Int'l Joint Research / Invited
  • [Presentation] QGP Tomography with jets2019

    • Author(s)
      中條達也
    • Organizer
      2019 Joint workshop of FKPPL and TYL/FJPPL
    • Int'l Joint Research
  • [Presentation] Heavy Ion Acceleration Plan at J-PARC2019

    • Author(s)
      三明康郎
    • Organizer
      3rd J-PARC Symposium
    • Int'l Joint Research / Invited
  • [Presentation] Elliptic flow of electrons from heavy-flavour hadron decays in Pb-Pb collisions at √sNN = 5.02 TeV with ALICE2019

    • Author(s)
      坂井真吾
    • Organizer
      Quark Matter 2019 - the XXVIIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions
    • Int'l Joint Research
  • [Presentation] Measurement of heavy flavour jets with electrons from heavy-flavour hadron decays in pp and p-Pb collisions at √sNN=5.02 TeV with ALICE2019

    • Author(s)
      高村匡広
    • Organizer
      Quark Matter 2019 - the XXVIIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions
    • Int'l Joint Research
  • [Presentation] The neutral meson measurement in jets in Pb-Pb collisions in ALICE2019

    • Author(s)
      田所賢一
    • Organizer
      Quark Matter 2019 - the XXVIIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions
    • Int'l Joint Research
  • [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] LHC ALICE実験日本グループ

    • URL

      http://alice-j.org/

URL: 

Published: 2021-01-27  

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