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1997 Fiscal Year Final Research Report Summary

Kaonic Atom X-ray Research on Light Nuclei

Research Project

Project/Area Number 08454059
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionTokyo Institute of Technology (1997)
The University of Tokyo (1996)

Principal Investigator

IWASAKI Masahiko  Tokyo Institute of Technology, Department of Physics, Associate Professor, 理学部・物理学科, 助教授 (60183745)

Co-Investigator(Kenkyū-buntansha) ISHIKAWA Takashi  University of Tokyo, Department of Physics, Research Associate, 大学院・理学系研究科, 助手 (60176162)
Project Period (FY) 1996 – 1997
KeywordsKaon / Strong interaction / x-ray / CCD
Research Abstract

At KEK (Natinal Institute for High Energy Physics : Japan), we have measured the shift and width of the kaonic hydrogen 1s state due to the KN strong interaction. We have observed, for the first time, distinct K-series kaonic hydrogen x rays with good signal-to-noise ratio in the energy spectrum.
The measured energy shift and width were determined to be DELTAE (1s) =-323 (]SY.+-。[) 63 (statistical) (]SY.+-。[) 11 (systematic ) eV (repulsive) and GAMMA (1s) =407 (]SY.+-。[) 208 (statistical) (]SY.+-。[) 100 (systematic) eV,respectively.
We extended our experimental program on kaonic atom on light nuclei at DAFNE to resolve the isospin dependence and to obtain KN-sigma term, one of the most fundamental parameter for the chiral symmetry bracing.

  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] M.Iwasaki et al.: "Obsevation of the Kaonic Hydrogen X-rays" Physical Review Letters'. 78. 3067-3069 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Iwasaki et al.: "A New approach for Kaonic Hydrogen Experiment" Nuclear Physics A. 585. 239-245 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岩崎 雅彦, 中村 哲, 伊藤 健康: "K中間子原子でのX線精密測定" 日本物理学会誌. 52. 272-275 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.N.Nakamura et al.: "A New Approach to Measure Kaonic Hydrogen X-rays" Nuclear Instruments and Method. (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.M.Ito et al,: "Precise Measurement of the Kaonic Hydrogen X-rays" Nuclear Physics A. (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwasaki et al: "Discovery of the negative shift of the Kaonic Hydrogen 4S Sta" Nuclear Physics A. (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwasaki et al.: "Observation of Kaonic Hydrogen K-alpha X Rays" Phys.Rev.Let.78. 3068 (1997)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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