Abstract
It is found that the suppression due to ΛN-ΣN 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 4Λ H and 4Λ 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 6Λ H.
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© 2000 Springer-Verlag Wien
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Myint, K.S., Harada, T., Shinmura, S., Akaishi, Y. (2000). Neutron Rich Lambda Hypernuclei. In: Oryu, S., Kamimura, M., Ishikawa, S. (eds) Few-Body Problems in Physics ’99. Few-Body Systems, vol 12. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6287-3_67
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DOI: https://doi.org/10.1007/978-3-7091-6287-3_67
Publisher Name: Springer, Vienna
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