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Il Nuovo Cimento A (1965-1970)

, Volume 102, Issue 2, pp 473–479 | Cite as

Possible existence of light Σ hypernuclei

  • T. Harada
  • Y. Akaishi
  • S. Shinmura
  • H. Tanaka
Article

Summary

Based on the realistic
and
interactions, the possible existence of few-body Σ hypernuclei is examined. The existence of Λ 4 He ( Λ 4 H) with isospin=1/2 and spin=0 is predicted as a bound system. Its Σ separation energy and width are 3.55 MeV and 4.8 MeV, respectively. A mechanism for the narrow width is presented and elucidated.

PACS

21.80 - Hypernuclei 

Воэможное сушествование легких Σ-гиперядер

Реэюме

На основе реалистичных
и
вэаимодействий исследуется воэможное сушествование легких Σ-гиперядер. Предскаэывется сушествование Λ 4 He ( Λ 4 H) с иэоспином 1/2 и спином 0, как свяэанной системы. Энергия отделения Σ и щирина соответственно составляют 3.55 MзB и 4.8 MзB. Предлагается и раэщясняется механиэм уэкой щирины зтого состояния.

Riassunto

Basandosi sulle interazioni realistiche
e
si esamina la possibile esistenza di ipernuclei Σ a pochi corpi. Si prevede l’esistenza di Λ 4 He ( Λ 4 H) con isospin 1/2 e spin 0 come stato legato. La sua energia di separazione Σ e l’ampiezza sono 3.55 MeV e 4.8 MeV, rispettivamente. Si presenta e si chiarifica il meccanismo dell’ampiezza stretta.

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Copyright information

© Società Italiana di Fisica 1989

Authors and Affiliations

  • T. Harada
    • 1
  • Y. Akaishi
    • 1
  • S. Shinmura
    • 1
    • 2
  • H. Tanaka
    • 1
    • 3
  1. 1.Department of PhysicsHokkaido UniversitySapporoJapan
  2. 2.Department of Applied MathematicsGifu UniversityGifuJapan
  3. 3.Department of Commercial ScienceSapporo Gakuin UniversitySapporoJapan

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