Role of chiral symmetry in In-medium propaties of hadrons and partial restoration of chiral symmetry
| Project/Area Number |
17K05449
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Tokyo Institute of Technology (2018-2021)
Tokyo Metropolitan University (2017) |
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Principal Investigator |
JIDO Daisuke 東京工業大学, 理学院, 教授 (30402811)
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| Project Period (FY) |
2017-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | ハドロン物理 / カイラル対称性 / カイラル対称性の部分的回復 / ダイクォーク / カイラル有効理論 / 重いハドロンの弱崩壊 / クォーク凝縮 / 励起エネルギーの可視化 / エキゾチックハドロン / ストレンジクォーク / K中間子光学ポテンシャル / 超対称性 / η'中間子原子核 / π中間子光学ポテンシャル / 相対論的平均場理論 / 理論核物理 / 中間子原子 / ハドロン質量の起源 |
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| Outline of Final Research Achievements |
This study discusses the role of the chiral symmetry in in-medium hadron properties in order to understand partial restoration of chiral symmetry in nuclear medium systematically and also to establish chiral effective theories for mesons in nuclear matter. The in-medium chiral effective theory for pion is extended to isospin asymmetric nuclear matter and the in-medium quark condensate, pion masses, pion decay constant and wavefunction renormalization are calculated. The estimation of the in-medium modification of kaon by using experimental data for the kaon-nucleon elastic scattering and the investigation of the structure of the eta' mesonic nuclei are performed. In addition, the existence of diquark is discussed by the properties of the heavy hadrons.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は物質の質量の起源の謎に迫る研究の一端を担っており、物質の成り立ちを明らかにする。本研究において、強い相互作用の真空構造を複雑にしているクォーク凝縮が原子核中でその大きさが減少していることを計算で示し、原子核中で真空構造が変化している可能性を確認した。また、クォーク二つから構成されるダイクォークが重いハドロンの中で重要な構成要素となり得ることを見いだした。
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Report
(6 results)
Research Products
(85 results)
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[Journal Article] Structure of double pionic atoms2021
Author(s)
Tani Akari, Ikeno Natsumi, Jido Daisuke, Nagahiro Hideko, Fujioka Hiroyuki, Itahashi Kenta, Hirenzaki Satoru
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Journal Title
Progress of Theoretical and Experimental Physics
Volume: 2021
Issue: 3
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Journal Article] Exotic hadrons from heavy ion collisions2017
Author(s)
Sungtae Cho, Tetsuo Hyodo, Daisuke Jido, Che Ming Ko, Su Houng Lee, Saori Maeda, Kenta Miyahara, Kenji Morita, Marina Nielsen, Akira Ohnishi, Takayasu Sekihara, Taesoo Song, Shigehiro Yasui, Koichi Yazaki, (ExHIC Collaboration)
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Journal Title
Progress in Particle and Nuclear Physics
Volume: 印刷中
Pages: 279-322
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Daisuke Jido2019
Author(s)
Dquark perspective on baryon structure
Organizer
Tokyo Institute of Technology and Stony Brook University Joint Science and Technology Meeting
Related Report
Int'l Joint Research / Invited
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