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Study of the Decays of Hypernuclei

Research Project

Project/Area Number 60540172
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionFukui University

Principal Investigator

BANDO Hiroharu  Division of Mathematical Physics, Fukui University, 工学部, 助教授 (20025357)

Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1986: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1985: ¥500,000 (Direct Cost: ¥500,000)
KeywordsHypernuclei / Lifetime / Strangeness / Decay Width / K-Meson / Λ粒子
Research Abstract

1. Decay by the strong interaction : (1) Explanation of the reason why the widths of high-lying <LAMBDA> single-particle states are surprisingl narrow. (2) Analysis of the <^9Be> ( <K^-> , <phi^-> ) <^9_(LAMBDA)Be> reaction data by hypernuclear cluster model (3) Trial to apply the model to <SIGMA> hypernucleus
2. Decay by the electromagnetic interaction : (1) Establish the theoretical prediction of the "glue-like role" of <LAMBDA> particle in hypernuclei, which compress the system and should be most drastically observed in the E2 transition rates.
3. Decay by the weak interaction : (1) Study of the pi-mesonic decay which reflects sensitively nuclear (hypernuclear) structures; occupation probabilities of shells, short-range correlations, distortion and absorption of pion, ... (2) Study of the nonmesonic decay in very light hypernuclei by the and exchange model, which turns out to be unsuccessful. (3) Study and proposal of the production of polarized hypernucleus and the measurement of the angular correlation for the weak decay particles, which will greatly contribute to disclose the nonmesonic decay mechanism.
4. Summary of the fruits of this project is included in Prog. Theor. Phys. : Supplement No.81 and in the Proceedings of 1986 INS International Symposium on Hypernuclear Physics.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] H.Band【o!~】: Physical Review C. 31. 265-267 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】: Physics Letters B. 150. 409-411 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] T.Yamada: Progress of Theoretical Physics. 73. 397-413 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] K.Takeuchi: Prog.Theor.Phys.73. 841-844 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y.Yamamoto: Prog.Theor.Phys.73. 905-917 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】: Czechoslovakian Journal of Physics. B36. 915-921 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】: Progress of Theoretical Physics Supplement. 81. 1-203 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】: Nuclear Physics A. 450. 217-236 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] T.Yamada: Physics Letters B. 172. 149-152 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】: Genshikaku-Kenkyu. 31. 99-111 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Yu You-wen: Prog.Theor.Phys.76. 861-864 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Wang Xi-cang: Prog.Theor.Phys.76. 865-878 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】: Progress of Theoretical Physics. 76. 1321-1333 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Wang Xi-cang: Zeitschrift f【u!¨】r Physik A. 326. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H.Band【o!~】(editor): "Proceedings of the 1986 INS International Symposium on Hypernuclear Physics" The Organizing Committee Institute for Nuclear Study,Tokyo Univ., 448 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Narrow Widths of <LAMBDA> Single Particle States in Hypernuclei" Physical Review C. 31. 265-267 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Pionic Decay of <LAMBDA> -Hypernuclei and Nucleon Occupation Probabilities" Physics Letters B. 150. 409-411 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] T. Yamada: "Particle Widths of Excited States in the <^9_(LAMBDA)Be> Hypernucleus" Progress of Theoretical Physics. 73. 397-413 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] K. Takeuchi: "Nonmesonic Decays of <^4_(LAMBDA)H> , <^4_(LAMBDA)He> and <^5_(LAMBDA)He> Hypernuclei by the <pi> and <rho> Exchange Model" Prog. Theor. Phys.73. 841-844 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Y. Yamamoto: "Effective Hyperon-Nucleon Interaction Derived from Nijmegen OBE Model" Prog. Theor. Phys.73. 905-917 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Pionic Decay of Hypernuclei" Czechoslovakian Journal of Physics. B36. 915-921 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Structure of Hypernuclei" Progress of Theoretical Physics Supplement. 81. 1-203 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Consequences of the Cluster Model of Light Hypernuclei" Nuclear Physics A. 450. 217-236 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] T. Yamada: "The <^9Be> ( <k^-> , <phi^-> ) <^9_(LAMBDA)Be> Hypernuclear Production Reaction with Coupled-Channel Cluster Wave Function" Physics Letters B. 172. 149-152 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Production and Decay of Polarized Hypernucleus" Genshikaku-Kenkyu. 31. 99-111 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Yu You-wen: "Glue-like Role of <LAMBDA> Particle in Hypernuclei" Prog. Theor. Phys.76. 861-864 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Wang Xi-cang: " <LAMBDA> N Exchange-Force Effects on the Binding Energies of <^5_(LAMBDA)He> , <^9_(LAMBDA)Be> , <^6_(LAMBDA)_(LAMBDA)He> and <^(10)_(LAMBDA)_(LAMBDA)Be> Hypernuclei" Prog. Theor. Phys.76. 865-878 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando: "Production of Hypernuclear States by the ( <phi^+> , <K^+> ) Reaction" Progress of Theoretical Physics. 76. 1321-1333 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Wang Xi-cang: "Cluster Model Study of Light p-Shell <LAMBDA> -Hypernuclei with OBE-Based Effective <LAMBDA> N Interction" Zeitschrift fur Physik A. 326. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] H. Bando ed.: The Organizing Committee,Institute for Nuclear Study, Tokyo Univ.Proceedings of the 1986 INS International Symposium on Hypernuclear Physics, 448 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-31   Modified: 2016-04-21  

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