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X-ray spectroscopy of kaonic deuterium atoms

Research Project

Project/Area Number 18H01237
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 InstitutionJapan Atomic Energy Agency

Principal Investigator

Hashimoto Tadashi  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究職 (20732952)

Co-Investigator(Kenkyū-buntansha) 佐久間 史典  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 (10455347)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
KeywordsK中間子原子 / KbarN相互作用 / J-PARC / X線分光 / シリコンドリフト検出器 / シリコンX線検出器
Outline of Final Research Achievements

We are aiming at the first measurement of kaonic deuterium X-rays to resolve the isospin-dependent antikaon-nucleon interaction. First, we tested large-acceptance silicon X-ray detectors, which is key instruments in our experiment, to demonstrate good performance in the beamline. Next, we installed the X-ray detector system into the cryogenic gas target system, and together with cylindrical detectors for background reduction, we performed a commissioning experiment. We successfully observed X-rays from kaonic helium and hydrogen. Based on these test experiments, we upgraded detector systems and also considered beamline upgrade, confirming the feasibility of the near future measurement of kaonic deuterium X-rays.

Academic Significance and Societal Importance of the Research Achievements

K中間子重水素のX線測定は幅が広くX線収量が少ないため困難な実験である。本研究ではJ-PARCの大強度K中間子ビームの利用に加え、大立体角X線検出器を開発、さらに円筒型検出器によるバックグラウンド低減を行うことでこの実験の実現が可能であることを示した。K中間子重水素のX線測定が実現すると、既存のK中間子水素データと合わせて反K中間子と核子の相互作用をアイソスピンを分離して決定することができる。これは低エネルギーQCDの重要な基礎データとなり、近年発見されたK中間子の原子核束縛状態や中性子星の構造研究への寄与も期待される。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (28 results)

All 2022 2021 2019 2018 Other

All Int'l Joint Research (9 results) Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (13 results) (of which Int'l Joint Research: 11 results,  Invited: 5 results)

  • [Int'l Joint Research] シュテファンマイヤー研究所(オーストリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] イタリア国立核物理学研究所(イタリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] シュテファンマイヤー研究所(オーストリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] イタリア国立核物理学研究所(イタリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] シュテファンマイヤー研究所(オーストリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] イタリア国立核物理学研究所(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 米国国立標準技術研究所 (NIST)(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] シュテファンマイヤー研究所(オーストリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] イタリア国立核物理学研究所(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Measurements of Strong-Interaction Effects in Kaonic-Helium Isotopes at Sub-eV Precision with X-Ray Microcalorimeters2022

    • Author(s)
      Hashimoto T. et al.
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 11 Pages: 112503-112503

    • DOI

      10.1103/physrevlett.128.112503

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Summary of the K-pp bound-state observation in E15 and future prospects2022

    • Author(s)
      F. Sakuma, T. Hashimoto, et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 262 Pages: 01008-01008

    • DOI

      10.1051/epjconf/202226201008

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Recent Results and Future Prospects of Kaonic Nuclei at J-PARC2021

    • Author(s)
      F. Sakuma, T. Hashimoto, et al.
    • Journal Title

      Few-Body Systems

      Volume: 62 Issue: 4 Pages: 103-103

    • DOI

      10.1007/s00601-021-01692-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Kaonic Atom Experiments at J-PARC2019

    • Author(s)
      T. Hashimoto et al.
    • Journal Title

      JPS Conf. Proc.

      Volume: 26 Pages: 023013-023013

    • DOI

      10.7566/jpscp.26.023013

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] “K?pp”, a K~-meson nuclear bound state, observed in 3He(K-,Λp)n reactions2019

    • Author(s)
      Ajimura S. et. al
    • Journal Title

      Physics Letters B

      Volume: 789 Pages: 620-625

    • DOI

      10.1016/j.physletb.2018.12.058

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A New Silicon Drift Detector System for Kaonic Atom Measurements2018

    • Author(s)
      C. Trippl, S. Okada et al.
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1138 Pages: 012013-012013

    • DOI

      10.1088/1742-6596/1138/1/012013

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Kaonic atom experiments at J-PARC2022

    • Author(s)
      T. Hashimoto
    • Organizer
      Second International Workshop on the Extension Project for the J-PARC Hadron Experimental Facility
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kaonic atom experiments with TES microcalorimeters2022

    • Author(s)
      T. Hashimoto
    • Organizer
      High precision measurements of kaonic atoms
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] J-PARCにおけるK中間子原子X線分光の進展2021

    • Author(s)
      橋本直
    • Organizer
      ELPH 研究会 C031「多彩なビーム実験と多様な理論的手法で迫るハドロン間相互作用」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Kaonic atom X-rays at J-PARC2021

    • Author(s)
      T. Hashimoto
    • Organizer
      INTERNATIONAL CONFERENCE ON EXOTIC ATOMS AND RELATED TOPICS (EXA 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] X-ray spectroscopy of kaonic atoms with TES-based microcalorimeters2021

    • Author(s)
      T. Hashimoto
    • Organizer
      High precision X-ray measurement 2021 (HPXM2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] X-ray measurement of kaonic He-3,4 atoms with a high-resolution microcalorimeter2021

    • Author(s)
      T. Hashimoto
    • Organizer
      Joint THEIA-STRONG2020 and JAEA/Mainz REIMEI Web-Seminar 2020/2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kaonic atom experiments at J-PARC2021

    • Author(s)
      T. Hashimoto et al.
    • Organizer
      Hadron in Nucleus 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Status and plan of E572019

    • Author(s)
      T. Hashimoto et al.
    • Organizer
      Kaon Physics at DAΦNE, J-PARC, and SPring-8
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kaonic atom experiments at J-PARC2019

    • Author(s)
      T. Hashimoto et al.
    • Organizer
      STRANEX: Recent progress and perspectives in STRANge EXotic atoms studies and related topics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kaonic atoms analyses of data for J-PARC2019

    • Author(s)
      T. Hashimoto et al.
    • Organizer
      Symposium on STrangeMatter: Kaonic Atoms research in Italy and Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kaonic atom experiments at J-PARC2018

    • Author(s)
      T. Hashimoto for J-PARC E62/E57 collaborations
    • Organizer
      8th International Conference on Quarks and Nuclear Physics (QNP 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] J-PARCにおけるK中間子原子X線分光2018

    • Author(s)
      橋本直
    • Organizer
      ELPH研究会C023「原子核中におけるハトロンの性質とカイラル対称性の役割」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Kaonic Atom X-ray Spectroscopy with Transition Edge Sensors2018

    • Author(s)
      S. Okada, T. Hashimoto, S. Yamada, H. Tatsuno, F. Sakuma, et al. (J-PARC E62 collaboration)
    • Organizer
      the 2018 Applied Superconductivity Conference (ASC 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2023-01-30  

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