期刊
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
卷 35, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0954-3899/35/8/085003
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The Xi(K) over bar interaction is dynamically investigated in a chiral quark model by resolving the resonating group method (RGM) equation. The model parameters are taken from our previous work, which gave a satisfactory description of the energies of the baryon ground states, the binding energy of the deuteron, the nucleon -nucleon (NN) scattering phase shifts and the hyperon -nucleon (YN) cross sections. The results show that the S-wave isospin I = 0 Xi(K) over bar interaction is attractive, and in the extended chiral SU(3) quark model such attraction can make for a Xi(K) over bar bound state with 3 MeV binding energy. Furthermore the behavior of the one-gluon exchange and the vector-meson exchange is examined and it is found that the one-gluon exchange is strongly repulsive while the vector-meson exchange offers weak attraction in the Xi(K) over bar system.
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