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

Spectroscopy of eta'-mesic nuclei as an approach to study of QCD vacuum

Research Project

Project/Area Number 18H01242
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Itahashi Kenta  国立研究開発法人理化学研究所, 開拓研究本部, 専任研究員 (30322093)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Keywordsη′ / 量子異常 / 軸性U(1)対称性 / カイラル対称性 / ハドロン / 分光 / イータプライム中間子 / ドイツ重イオン研究所 / 中間子 / η′中間子原子核 / 軸性U(1)量子異常 / 真空の構造 / U(1)対称性 / プラスティックシンチレータ / 波形デジタイザ / η′中間子 / 低エネルギーQCD
Outline of Final Research Achievements

The η′ nuclear spectroscopy experiment (Experimental Task No. S490) was carried out at the German Heavy Ion Research Institute (GSI) with a beam time of about 5 days. A beam of about 100 million 2.5 GeV protons per second was irradiated onto a carbon target. Deuterons emitted forward by the 12C(p,d) reaction were measured in the forward spectrometer in coincidence with the particles emitted around the target measured by a large solid angle detector WASA. The analysis is in progress, and the status of the analysis is being reported in the form of proceedings and presentations at research conferences. As soon as the analysis is completed, a paper will be written, submitted and published.

Academic Significance and Societal Importance of the Research Achievements

擬スカラーη′中間子を原子核という超高密度物質中で分光することで、物質質量の起源に関する知見を得ることをめざす。η′中間子の大質量は素粒子物理における重要な問題、η問題として捉えられており、その解決が待たれている。本研究では、陽子ビームを使ったη′中間子原子核の生成・分光実験を実施し、当初の予定通りの統計量のデータを得る事に成功した。2024/5現在解析を行っており、終了次第論文執筆、投稿を行う。

Report

(6 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (24 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (11 results) (of which Int'l Joint Research: 8 results,  Invited: 3 results) Book (1 results) Remarks (1 results)

  • [Int'l Joint Research] 重イオン研究所/ギーセン大学/ユーリッヒ研究所(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 重イオン研究所/ユーリッヒ研究センター(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] 重イオン研究所/ユーリッヒ研究所(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Chiral symmetry restoration at high matter density observed in pionic atoms2023

    • Author(s)
      Nishi Takahiro et. al
    • Journal Title

      Nature Physics

      Volume: 2023 Issue: 6 Pages: 1-8

    • DOI

      10.1038/s41567-023-02001-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The WASA-FRS project at GSI and its perspective2023

    • Author(s)
      T.R. Saito et al.
    • Journal Title

      Nucl. Instrum. Meth. B

      Volume: 542 Pages: 22-25

    • DOI

      10.1016/j.nimb.2023.05.042

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] WASA-FRS Experiments in FAIR Phase-0 at GSI2023

    • Author(s)
      Y. K. Tanaka et al. (WASA-FRS/Super-FRS Experiment Collaboration)
    • Journal Title

      Acta Physica Polonica B, Proceedings Supplement

      Volume: 16 Issue: 4 Pages: 4-27

    • DOI

      10.5506/aphyspolbsupp.16.4-a27

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Studies of three-and four-body hypernuclei with heavy-ion beams, nuclear emulsions and machine learning2023

    • Author(s)
      T.R. Saito et al.
    • Journal Title

      J. Phys. Conf. Ser.

      Volume: 2586 Issue: 1 Pages: 12148-12148

    • DOI

      10.1088/1742-6596/2586/1/012148

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Study of light hypernuclei in Europe: The hypertriton and nnΛ puzzles2023

    • Author(s)
      C. Rappold et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 290 Pages: 09007-09007

    • DOI

      10.1051/epjconf/202329009007

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Time resolution and high-counting rate performance of plastic scintillation counter with multiple MPPC readout2022

    • Author(s)
      R. Sekiya
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A

      Volume: 1034 Pages: 166745-166745

    • DOI

      10.1016/j.nima.2022.166745

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Search for η’-mesic nuclei using (p,d) reaction with FRS/Super-FRS at GSI/FAIR2020

    • Author(s)
      Y. K. Tanaka et al.
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1643 Issue: 1 Pages: 012181-012181

    • DOI

      10.1088/1742-6596/1643/1/012181

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spectroscopy of η′-mesic Nuclei with WASA at GSI/FAIR2020

    • Author(s)
      Tanaka Y.K. et al.,
    • Journal Title

      Acta Physica Polonica B

      Volume: 51 Issue: 1 Pages: 39-39

    • DOI

      10.5506/aphyspolb.51.39

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Search for η′-mesic nuclei in 12C(p,dp) reaction with the WASA detector at GSI-FRS2023

    • Author(s)
      Ryohei Sekiya
    • Organizer
      Hadron2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chiral symmetry restoration in nuclear medium observed in pionic atoms2023

    • Author(s)
      K. Itahashi
    • Organizer
      Hadron2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] WASA-FRS experiments in FAIR Phase-0 at GSI2022

    • Author(s)
      Y.K. Tanaka
    • Organizer
      Zakopane conference on nuclear physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Studies of three-and four-body hypernuclei with heavy-ion beams, nuclear emulsions and machine learning2022

    • Author(s)
      T.R. Saito
    • Organizer
      International Nuclear Physics Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The WASA-FRS project at GSI and its perspective2022

    • Author(s)
      T.R. Saito
    • Organizer
      EMIS 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study of light hypernuclei in Europe: the hypertriton and nnΛ puzzles2022

    • Author(s)
      C. Rappold
    • Organizer
      European Nuclear Physics Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Status of WASA-FRS experiments in 2022021

    • Author(s)
      Y.K. Tanaka
    • Organizer
      NUSTAR Week 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] "GSIにおけるWASA検出器を用いたハイパー核分光及びeta'中間子原子核探索実験のためのプラスチックシンチレータバレルの開発(IV)",2021

    • Author(s)
      関屋涼平
    • Organizer
      第76回日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] GSIにおけるWASA検出器を用いたハイパー核分光実験及びη'中間子原子核探索実験のためのプラスチックシンチレータバレルの開発(III)2020

    • Author(s)
      関屋涼平
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Presentation] GSIにおけるWASA検出器を用いたハイパー核分光実験及びη'中間子原子核探索実験のためのプラスチックシンチレータバレルの開発(II)2019

    • Author(s)
      関屋涼平
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Presentation] Mesons in nuclei: review and perspectives2019

    • Author(s)
      Kenta Itahashi
    • Organizer
      3rd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] Handbook of Nuclear Physics2022

    • Author(s)
      Kenta Itahashi
    • Total Pages
      6000
    • Publisher
      Springer Nature
    • ISBN
      9789811588181
    • Related Report
      2022 Annual Research Report
  • [Remarks] Web for etaprime

    • URL

      http://meson.riken.jp/etaprime

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi