• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2020 Fiscal Year Annual Research Report

Hadron interactions from two particle momentum correlation and scattering amplitudes around threshold

Publicly Offered Research

Project AreaClustering as a window on the hierarchical structure of quantum systems
Project/Area Number 19H05151
Research InstitutionKyoto University

Principal Investigator

大西 明  京都大学, 基礎物理学研究所, 教授 (70250412)

Project Period (FY) 2019-04-01 – 2021-03-31
Keywordsハドロン間相互作用 / 2粒子運動量相関関数 / カイラル動力学 / 格子QCD / 高エネルギー原子核衝突
Outline of Annual Research Achievements

ハドロン間相互作用は原子核などのハドロン多体系研究の基盤である。ところが核子を除くハドロンは全て不安定であり、散乱実験の標的にできない。我々は高エネルギー核反応からの様々なハドロン対(ΛΛ、pΩ-、pK-、pΞ-)の運動量相関を用いて相互作用を議論してきた。運動量相関は相対波動関数の2乗と粒子源関数の積分で与えられるため、後者が既知ならば前者から相互作用の情報が得られるのである。
2020年度にはK^{bar}N(反K中間子-核子)-πΣ-πΛ結合チャネル効果を取り入れた相関関数の計算プログラムを完成し、pK-相関関数を求め、LHC-ALICE collaborationにより観測されたpp(陽子-陽子)衝突からの相関関数データと比較することにより、カイラル動力学によるK^{bar}N相互作用の検証を行った。またΛ(1405)がK^{bar}N束縛状態としての性質を持つか否かを判別する上で、源関数サイズが異なるpA (陽子-原子核), AA (原子核-原子核)反応での相関関数が有用であることを議論し、予言値を与えた。この研究成果は Phys. Rev. Lett. にて出版されている。ここで開発した理論手法は、結合チャネル・クーロンポテンシャル・しきい値のズレの効果を初めて全て取り入れて相関関数の計算を実現したものであり、新規性が高く、また適用範囲が広い。この枠組みを用いて強い相互作用の第一原理計算である格子QCDに基づいてHAL QCD collaborationによって求められたNΞ-ΛΛ結合チャネルポテンシャルを用いた相関関数の計算も行っており、現在論文を準備中である。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

  • Research Products

    (22 results)

All 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 7 results) Presentation (8 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results)

  • [Int'l Joint Research] Technical University of Munich(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      Technical University of Munich
  • [Int'l Joint Research] Duke University(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Duke University
  • [Int'l Joint Research] Fudan University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      Fudan University
  • [Int'l Joint Research] Yonsei University/Kangwon National University(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      Yonsei University/Kangwon National University
  • [Journal Article] Replica evolution of classical fields in 4+1 dimensional spacetime toward real time dynamics of quantum fields2021

    • Author(s)
      Akira Ohnishi, Hidefumi Matsuda, Teiji Kunihiro, Toru T. Takahashi
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2021 Pages: 023B09

    • DOI

      10.1093/ptep/ptaa172

    • Peer Reviewed / Open Access
  • [Journal Article] $K^-p$ correlation function from high-energy nuclear collisions and chiral SU(3) dynamics2020

    • Author(s)
      Yuki Kamiya, Tetsuo Hyodo, Kenji Morita, Akira Ohnishi, Wolfram Weise
    • Journal Title

      Phys. Rev. Lett.

      Volume: 124 Pages: 132501 (1-6)

    • DOI

      10.1103/PhysRevLett.124.132501

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Shear viscosity of classical massless fields in scalar theory2020

    • Author(s)
      Hidefumi Matsuda, Teiji Kunihiro, Akira Ohnishi, Toru T. Takahashi
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2020 Pages: 053D03 (1-19)

    • DOI

      10.1093/ptep/ptaa058

    • Peer Reviewed / Open Access
  • [Journal Article] Statistical double $\Lambda$ hypernuclear formation from $\Xi^-$ absorption at rest in light nuclei2020

    • Author(s)
      Akira Ohnishi, Chikako Ishizuka, Kohsuke Tsubakihara, Yuichi Hirata
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2020 Pages: 063D01 (1-17)

    • DOI

      10.1093/ptep/ptaa047

    • Peer Reviewed / Open Access
  • [Journal Article] Signatures of the vortical quark-gluon plasma in hadron yields2020

    • Author(s)
      Hidetoshi Taya, Aaron Park, Sungtae Cho, Philipp Gubler, Koichi Hattori, Juhee Hong, Xu-Guang Huang, Su Houng Lee, Akihiko Monnai, Akira Ohnishi, Makoto Oka, Di-Lun Yang (ExHIC-P Collaboration)
    • Journal Title

      Phys. Rev. C

      Volume: 102 Pages: 021901(R)(1-6)

    • DOI

      10.1103/PhysRevC.102.021901

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Universality in COVID-19 spread in view of the Gompertz function2020

    • Author(s)
      Akira Ohnishi, Yusuke Namekawa, Tokuro Fukui
    • Journal Title

      Prog. Theory. Exp. Phys.

      Volume: 2020 Pages: 123J01 (1-20)

    • DOI

      10.1093/ptep/ptaa148

    • Peer Reviewed / Open Access
  • [Journal Article] Shear viscosity of a classical Yang-Mills field2020

    • Author(s)
      Hidefumi Matsuda, Teiji Kunihiro, Berndt M{\"u}ller, Akira Ohnishi, Toru T. Takahashi
    • Journal Title

      Phys. Rev. D

      Volume: 102 Pages: 114503 (1-11)

    • DOI

      10.1103/PhysRevD.102.114503

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Neutron-Proton Dynamics and Pion Production in Heavy-ion Collisions by the AMD+JAM Approach2020

    • Author(s)
      Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi
    • Journal Title

      JPS Conf. Proc.

      Volume: 32 Pages: 010067(1-4)

    • DOI

      10.7566/JPSCP.32.010067

    • Peer Reviewed / Open Access
  • [Journal Article] Dynamically Integrated Transport Model for High-energy Nuclear Collisions at 3<$\sqrt{s_{NN}}$<30 GeV2020

    • Author(s)
      Koichi Murase, Yukinao Akamatsu, Masayuki Asakawa, Tetsufumi Hirano, Masakiyo Kitazawa, Kenji Morita, Yasushi Nara, Chiho Nonaka, Akira Ohnishi
    • Journal Title

      JPS Conf. Proc.

      Volume: 32 Pages: 010081(1-4)

    • DOI

      10.7566/JPSCP.32.010081

    • Peer Reviewed / Open Access
  • [Journal Article] Study of $\bar{K}N$ interaction from the hadron-hadron correlation in high-energy nuclear collisions2020

    • Author(s)
      Y. Kamiya, T. Hyodo, K. Morita and A. Ohnishi
    • Journal Title

      Proc. of the 18th International Conference on Hadron Spectroscopy and Structure (HADRON2019)

      Volume: - Pages: 656-660

    • DOI

      10.1142/9789811219313_0112

    • Peer Reviewed
  • [Presentation] Femtoscopic study of NΞ interaction and search for the H dibaryon state around the NΞ threshold2021

    • Author(s)
      Akira Ohnishi, Y. Kamiya, K. Sasaki, T. Fukui, T. Hatsuda, T. Hyodo, K. Morita, K. Ogata
    • Organizer
      APFB2020 (Yamada Conference LXXII: The 8th Asia-Pacific Conference on Few-Body Problems in Physics)
    • Int'l Joint Research
  • [Presentation] 古典場のレプリカ発展における緩和過程2021

    • Author(s)
      大西明、松田英史、国広悌二、高橋徹
    • Organizer
      日本物理学会第 76 回年次大会
  • [Presentation] Correlation functions of strange hadrons and their relevance to bound state search2020

    • Author(s)
      Akira Ohnishi
    • Organizer
      3rd Symposium on Clustering as a window on the hierarchical structure of quantum systems
    • Int'l Joint Research / Invited
  • [Presentation] Replica evolution of classical fieldin 4+1 dimensional spacetimetoward real time dynamics of quantum field2020

    • Author(s)
      Akira Ohnishi, Hidefumi Matsuda, Teiji Kunihiro1, Toru. T. Takahashi
    • Organizer
      Asia-Pacific Symposium for Lattice Field Theory(APLAT 2020)
    • Int'l Joint Research
  • [Presentation] 4+1次元時空でのレプリカ発展による量子統計性をもつ古典場理論の提案2020

    • Author(s)
      大西明、松田英史、国広悌二、高橋徹
    • Organizer
      日本物理学会2020年秋季大会
  • [Presentation] Replica evolution of classical field in 4+1 dimensional spacetime as a simulator of quantum field evolution2020

    • Author(s)
      Akira Ohnishi, Hidefumi Matsuda, Teiji Kunihiro1, Toru. T. Takahashi
    • Organizer
      10th International Conference on Exact Renormalization Group 2020 (ERG2020)
    • Int'l Joint Research
  • [Presentation] Hadron-hadron correlation functions and its relation to exotic hadron search2020

    • Author(s)
      Akira Ohnishi
    • Organizer
      ALICE week 2020
    • Int'l Joint Research / Invited
  • [Presentation] Dense QCD matter tackled by experiments, observations, and theory2020

    • Author(s)
      Akira Ohnishi
    • Organizer
      KEK Theory Workshop 2020
    • Int'l Joint Research / Invited

URL: 

Published: 2021-12-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi