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The quark-meson coupling model for Lambda, Sigma and Xi hypernuclei

K. Tsushima·K. Saito·J. Haidenbauer·A. W. Thomas
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Abstract

The quark-meson coupling (QMC) model, which has been successfully used to describe the properties of both infinite nuclear matter and finite nuclei, is applied to a systematic study of $Λ, Σ$ and $Ξ$ hypernuclei. Assumptions made in the present study are, (i) the (self-consistent) exchanged scalar, and vector, mesons couple only to the u and d quarks, and (ii) an SU(6) valence quark model for the bound nucleons and hyperon. The model automatically leads to a very weak spin-orbit interaction for the $Λ$ in a hypernucleus. Effects of the Pauli blocking at the quark level, particularly in the open, coupled, $ΣN - ΛN$ channel (strong conversion), is also taken into account in a phenomenological way.

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K. Tsushima, K. Saito, J. Haidenbauer, A. W. Thomas. 1997-12-14. The quark-meson coupling model for Lambda, Sigma and Xi hypernuclei. https://doi.org/10.1016/s0375-9474(98)00806-9

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