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

• Project Area: Clustering as a window on the hierarchical structure of quantum systems
• Project/Area Number: 19H05151
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Kyoto 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
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
• 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 / 2粒子運動量相関 / 高エネルギー重イオン衝突 / ２粒子運動量相関

Outline of Research at the Start

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。本研究では格子QCDやカイラル動力学から得られる最新のハドロン間相互作用を用い、結合チャネル効果を取り入れて運動量相関を求め、最近次々に報告されている実験からのデータと比較してハドロン間相互作用の制限を更に進める。

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

• [Int'l Joint Research] Technical University of Munich(ドイツ)
• [Int'l Joint Research] Duke University(米国)
• [Int'l Joint Research] Fudan University(中国)
• [Int'l Joint Research] Yonsei University/Kangwon National University(韓国)
• [Int'l Joint Research] Chinese Academy of Sciences, Beijing/Nankai University/Chinese Academy of Sciences, Shanghai(中国)
• [Int'l Joint Research] Technical University of Munich/University of Munich/GSI(ドイツ)
• [Int'l Joint Research] Michigan State University/Texas A&M University/Lawrence Berkeley National Laboratory(米国)
• [Int'l Joint Research] INFN-LNS, Catania(イタリア)
• [Int'l Joint Research] INFN-HH, Magurele-Bucharest(ルーマニア)
• [Int'l Joint Research]
• [Journal Article] Replica evolution of classical fields in 4+1 dimensional spacetime toward real time dynamics of quantum fields (2021)
  • Author(s): Akira Ohnishi, Hidefumi Matsuda, Teiji Kunihiro, Toru T. Takahashi
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 2021 Issue: 2
  • DOI: 10.1093/ptep/ptaa172
  • Peer Reviewed / Open Access
• [Journal Article] K-p Correlation Function from High-Energy Nuclear Collisions and Chiral SU(3) Dynamics (2020)
  • Author(s): Kamiya Yuki、Hyodo Tetsuo、Morita Kenji、Ohnishi Akira、Weise Wolfram
  • Journal Title: Physical Review Letters Volume: 124 Issue: 13 Pages: 132501-132501
  • DOI: 10.1103/physrevlett.124.132501
  • NAID: 130008155890
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Shear viscosity of classical massless fields in scalar theory (2020)
  • Author(s): Hidefumi Matsuda, Teiji Kunihiro, Akira Ohnishi, Toru T. Takahashi
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 2020 Issue: 5
  • DOI: 10.1093/ptep/ptaa058
  • Peer Reviewed / Open Access
• [Journal Article] Statistical double $\Lambda$ hypernuclear formation from $\Xi^-$ absorption at rest in light nuclei (2020)
  • Author(s): Akira Ohnishi, Chikako Ishizuka, Kohsuke Tsubakihara, Yuichi Hirata
  • Journal Title: Prog. Theor. Exp. Phys. Volume: 2020 Issue: 6
  • DOI: 10.1093/ptep/ptaa047
  • NAID: 120006996969
  • Peer Reviewed / Open Access
• [Journal Article] Signatures of the vortical quark-gluon plasma in hadron yields (2020)
  • Author(s): Taya Hidetoshi, Park Aaron, Cho Sungtae, Gubler Philipp, Hattori Koichi, Hong Juhee, Huang Xu-Guang, Lee Su Houng, Monnai Akihiko, Ohnishi Akira, Oka Makoto, Yang Di-Lun
  • Journal Title: Physical Review C Volume: 102 Issue: 2 Pages: 021901-021901
  • DOI: 10.1103/physrevc.102.021901
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Universality in COVID-19 spread in view of the Gompertz function (2020)
  • Author(s): Akira Ohnishi, Yusuke Namekawa, Tokuro Fukui
  • Journal Title: Prog. Theory. Exp. Phys. Volume: 2020 Issue: 12
  • DOI: 10.1093/ptep/ptaa148
  • Peer Reviewed / Open Access
• [Journal Article] Shear viscosity of a classical Yang-Mills field (2020)
  • Author(s): Hidefumi Matsuda, Teiji Kunihiro, Berndt M{\"u}ller, Akira Ohnishi, Toru T. Takahashi
  • Journal Title: Phys. Rev. D Volume: 102 Issue: 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 Approach (2020)
  • Author(s): Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi
  • Journal Title: JPS Conference Proceedings Volume: 32 Pages: 010067-010067
  • 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 GeV (2020)
  • 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
  • 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 collisions (2020)
  • 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 / Open Access
• [Journal Article] Effects of Pauli blocking on pion production in central collisions of neutron-rich nuclei (2020)
  • Author(s): Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi
  • Journal Title: Phys. Rev. C Volume: 101 Issue: 3 Pages: 34607-34607
  • DOI: 10.1103/physrevc.101.034607
  • Peer Reviewed / Open Access
• [Journal Article] Probing ΩΩ and pΩ dibaryons with femtoscopic correlations in relativistic heavy-ion collisions (2020)
  • Author(s): Morita Kenji、Gongyo Shinya、Hatsuda Tetsuo、Hyodo Tetsuo、Kamiya Yuki、Ohnishi Akira
  • Journal Title: Physical Review C Volume: 101 Issue: 1 Pages: 015201-015201
  • DOI: 10.1103/physrevc.101.015201
  • Peer Reviewed / Open Access
• [Journal Article] Quark matter symmetry energy effects on hadron-quark coexistence in neutron star matter (2019)
  • Author(s): Xuhao Wu, Akira Ohnishi, Hong Shen
  • Journal Title: AIP Conf. Proc. Volume: 2127 Pages: 020032-020032
  • DOI: 10.1063/1.5117822
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Comparison of heavy-ion transport simulations: Collision integral with pions and Δ resonances in a box (2019)
  • Author(s): Akira Ono, Jun Xu, Maria Colonna, Pawel Danielewicz, Che Ming Ko, Manyee Betty Tsang, Yong-Jia Wang, Hermann Wolter, Ying-Xun Zhang, et al.
  • Journal Title: Phys. Rev. C Volume: 100 Issue: 4
  • DOI: 10.1103/physrevc.100.044617
  • NAID: 120006956356
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Path optimization in 0+1D QCD at finite density (2019)
  • Author(s): Yuto Mori, Kouji Kashiwa, Akira Ohnishi
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2019 Issue: 11
  • DOI: 10.1093/ptep/ptz111
  • Peer Reviewed / Open Access
• [Journal Article] Application of the path optimization method to the sign problem in an effective model of QCD with a repulsive vector-type interaction (2019)
  • Author(s): Kashiwa Kouji、Mori Yuto、Ohnishi Akira
  • Journal Title: Physical Review D Volume: 99 Issue: 11 Pages: 114005-114005
  • DOI: 10.1103/physrevd.99.114005
  • NAID: 120006778265
  • Peer Reviewed / Open Access
• [Presentation] Femtoscopic study of NΞ interaction and search for the H dibaryon state around the NΞ threshold (2021)
  • 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 search (2020)
  • 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 field (2020)
  • 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 evolution (2020)
  • 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 search (2020)
  • Author(s): Akira Ohnishi
  • Organizer: ALICE week 2020
  • Int'l Joint Research / Invited
• [Presentation] Dense QCD matter tackled by experiments, observations, and theory (2020)
  • Author(s): Akira Ohnishi
  • Organizer: KEK Theory Workshop 2020
  • Int'l Joint Research / Invited
• [Presentation] Hadron-hadron correlation and interaction from high-energy nuclear collisions (2020)
  • Author(s): Akira Ohnishi
  • Organizer: The 15th Hadron Spectroscopy Cafe Hadron interactions and Exotics in Heavy Ion collisions
  • Invited
• [Presentation] Higher-order symmetry energy parameters and neutron star properties (2019)
  • Author(s): Akira Ohnishi, E. E. Kolomeitsev, James M. Lattimer, Ingo Tews, Xuhao Wu
  • Organizer: YITP long-term workshop on Multi-Messenger Astrophysics in the Gravitational Wave Era
  • Int'l Joint Research
• [Presentation] Baryon-Baryon correlation from heavy-ion collisions and its implication to baryon-baryon interaction (2019)
  • Author(s): Akira Ohnishi
  • Organizer: FemTUM19
  • Int'l Joint Research / Invited
• [Presentation] The path optimization for the sign problem of low dimensional QCD (2019)
  • Author(s): Yuto Mori, Kouji Kashiwa, Akira Ohnishi
  • Organizer: The 37th International Symposium on Lattice Field Theory (Lattice 2019)
  • Int'l Joint Research
• [Presentation] Evading the model sign problem in the PNJL model with repulsive vector-type interaction via path optimization (2019)
  • Author(s): Akira Ohnishi, Yuto Mori, Kouji Kashiwa
  • Organizer: The 37th International Symposium on Lattice Field Theory (Lattice 2019)
  • Int'l Joint Research
• [Presentation] 2 粒子運動量相関から探るハドロン間相互作用 (From hadron correlations to hadron interactions) (2019)
  • Author(s): 大西 明
  • Organizer: 第二回クラスター階層領域研究会 (Program for 2nd Symposium on Clustering as a window on the hierarchical structure of quantum systems)
  • Invited
• [Presentation] 重イオン衝突と中性子星 --- ハドロン相関とハドロン間相互作用を中心に --- (2019)
  • Author(s): 大西 明
  • Organizer: 高密度ハドロン・クォーク物質の諸相と中性子星の構造・進化
  • Invited
• [Presentation] 静止 Ξ- 反応からのハイパー核破片生成(Hyperfragment fomation fro Ξ- absorption at rest on nuclei) (2019)
  • Author(s): 大西 明, 石塚知香子, 椿原康介, 平田雄一
  • Organizer: 「物質階層を横断する会」第４回 ～ハドロン・原子核・原子・分子合同ミーティング～
  • Invited
• [Presentation] Path optimization for the sign problem in low-dimensional QCD and QCD effective models at finite density (2019)
  • Author(s): Akira Ohnishi, Yuto Mori, Kouji Kashiwa
  • Organizer: YITP Molecule-type Workshop on Frontiers in Lattice QCD and related topics
  • Int'l Joint Research
• [Presentation] Hadron-Hadron Correlation and Interaction from High-Energy Collisions (2019)
  • Author(s): Akira Ohnishi
  • Organizer: International Molecule-type Workshop on Hadron Interactions and Polarization from Lattice QCD, Quark Model, and Heavy-Ion Collisions
  • Int'l Joint Research