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

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

1999-12-24

arxiv.org/abs/nucl-th/9912059v1

Nucl.Phys. A674 (2000) 229-245

Physics

Nuclear Physics

Nuclear Theory

20 pages, 5 figures

Scientific paper

10.1016/S0375-9474(00)00164-0

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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