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Hyperon properties in finite nuclei using realistic $YN$ interactions

I. Vidaña·A. Polls·A. Ramos·M. Hjorth-Jensen
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Abstract

Single-particle energies of the $Λ$ and $Σ$ hyperons are obtained from the relevant self-energies. The latter are constructed within the framework of a perturbative many-body approach employing present realistic hyperon-nucleon interactions such as the models of the Juelich and Nijmegen groups. The effects of the non-locality and energy dependence of the self-energy on the bound states are investi- gated. It is also shown that, although the single-particle hyperon energies are well reproduced by local Woods-Saxon hyperon-nucleus potentials, the wave functions from the non-local self-energy are far more extended. Implications of this behavior on the mesonic weak decay of $Λ$ hypernuclei are discused.

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I. Vidaña, A. Polls, A. Ramos, M. Hjorth-Jensen. 1998-05-19. Hyperon properties in finite nuclei using realistic $YN$ interactions. https://doi.org/10.1016/s0375-9474(98)00599-5

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