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Hyperon Single-Particle Potentials Calculated from SU6 Quark-Model Baryon-Baryon Interactions

M. Kohno·Y. Fujiwara·T. Fujita·C. Nakamoto·Y. Suzuki
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Abstract

Using the SU6 quark-model baryon-baryon interaction recently developed by the Kyoto-Niigata group, we calculate NN, Lambda N and Sigma N G-matrices in ordinary nuclear matter. This is the first attempt to discuss the Lambda and Sigma single-particle potentials in nuclear medium, based on the realistic quark-model potential. The Lambda potential has the depth of more than 40 MeV, which is more attractive than the value expected from the experimental data of Lambda-hypernuclei. The Sigma potential turns out to be repulsive, the origin of which is traced back to the strong Pauli repulsion in the Sigma N (I=3/2) ^3S_1 state.

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M. Kohno, Y. Fujiwara, T. Fujita, C. Nakamoto, Y. Suzuki. 1999-12-24. Hyperon Single-Particle Potentials Calculated from SU6 Quark-Model Baryon-Baryon Interactions. https://doi.org/10.1016/s0375-9474(00)00164-0

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