The Hypernuclei $^4_Λ$He and $^4_Λ$H: Challenges for Modern Hyperon-Nucleon Forces

Details The Hypernuclei $^4_Λ$He and $^4_Λ$H: Challenges for Modern Hyperon-Nucleon Forces The Hypernuclei $^4_Λ$He and $^4_Λ$H: Challenges for Modern Hyperon-Nucleon Forces

2001-12-19

arxiv.org/abs/nucl-th/0112060v2

Phys.Rev.Lett. 88 (2002) 172501

Physics

Nuclear Physics

Nuclear Theory

4 pages REVTeX 4, no figure

Scientific paper

10.1103/PhysRevLett.88.172501

The hypernuclei $^4_\Lambda$He and $^4_\Lambda$H provide important information on the hyperon-nucleon interaction. We present accurate Faddeev-Yakubovsky calculations for the $\Lambda$ separation energies of the $0^+$ ground and the $1^+$ excited states based on the Nijmegen SC YN interactions. We explicitly take the $\Sigma$ admixture into account. Mass differences of the baryons and the charge-dependence of the interaction are considered. The results show that the Nijmegen models cannot predict all separation energies simultaneously hinting to failures of the current interaction models.

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