Neutron Rich Lambda Hypernuclei

  • Khin Swe Myint
  • T. Harada
  • S. Shinmura
  • Y. Akaishi
Part of the Few-Body Systems book series (FEWBODY, volume 12)


It is found that the suppression due to ΛNN coupling solves the overbinding problem in Λ 5He but it, in turn, causes a severe underbinding in the four-body systems. The shortage of this binding is overcome by introducing the Λ–Σ coupling explicitly which is equivalent to the ΛN N three-body force. This force becomes strong in the 0+ states of Λ 4 H and Λ 4 He according to the coherently added enhancement. No significant effect of the Λ–Σ coupling is found in He isotope Λ hypernuclei while a strong Λ–Σ coupling effect is found in Λ 6 H.


Body Force Soft Core Neutron Rich Nucleus Tensor Force Neutron Drip Line 
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Copyright information

© Springer-Verlag Wien 2000

Authors and Affiliations

  • Khin Swe Myint
    • 1
  • T. Harada
    • 2
  • S. Shinmura
    • 3
  • Y. Akaishi
    • 4
  1. 1.Physics DepartmentMandalay UniversityMandalayMyanmarJapan
  2. 2.Sapporo Gakuin UniversityEbetsuHokkaidoJapan
  3. 3.Gifu UniversityGifuJapan
  4. 4.Institute of Particle and Nuclear StudiesKEKTanashiJapan

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