Ξ12C(0+) AND Ξ16O POTENTIALS DERIVED FROM THE SU6 QUARK-MODEL BARYON-BARYON INTERACTION

Abstract

We derive single-hyperon potentials for light nuclei, based on the G-matrix calculations of the quark-model baryon-baryon interactions developed by the Kyoto-Niigata group. The Ξ12 C (0+) and Ξ16 O potentials have non-trivial oscillating behavior, reflecting strong isospin dependence of the ΞN interaction; namely, attractive isospin I = 0 ΞN interaction and weakly repulsive I = 1 interaction. The latter repulsive effect is largely enhanced in the intermediate region of the Ξ-core potential, resulting in very weak attraction at the surface region.