Hyperon-Nucleon Interaction in a Quark Model

Makoto Oka

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arXiv · hep-ph/9310271

Hyperon-Nucleon Interaction in a Quark Model

Makoto Oka

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Abstract

A lecture given at the International School Seminar on {\sl Hadrons and Nuclei from QCD}, Tsuruga-Vladivostok-Sapporo, August-September, 1993. A realistic hyperon ($Y$)-nucleon ($N$) interaction based on the quark model and the one-boson-exchange potential is constructed. The Nijmegen potential model D with the SU(3) flavor symmetry is modified with a quark exchange interaction at the short-distance, which replaces the short-range repulsive core in the original model. The flavor-spin dependences of the short-range repulsion are qualitatively different from the original hard-core potential. We also study a two-body weak decay, $ΛN \to NN$, in the quark model. An effective weak interaction, where one-loop QCD corrections are explicitly taken into account, is employed. Differences from the conventional meson-exchange processes are discussed.

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Makoto Oka. 1993-10-13. Hyperon-Nucleon Interaction in a Quark Model. https://arxiv.org/abs/hep-ph/9310271

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