Kaon-nucleon interaction in the extended chiral SU(3) quark model

The chiral SU(3) quark model is extended to include the coupling between the quark and vector chiral fields. The one-gluon exchange (OGE) that dominantly governs the short-range quark-quark interaction in the original chiral SU(3) quark model is now nearly replaced by the vector-meson exchange. By use of this model, the isospin I=0 and I=1 kaon-nucleon S,P,D,F wave phase shifts are dynamically studied by solving the resonating group method (RGM) equation. Similar to those given by the original chiral SU(3) quark model, the calculated results for many partial waves are consistent with the experiment, while there is no improvement in this new approach for the P-13 and D-15 channels, of which the theoretical phase shifts are too repulsive and too attractive, respectively, when the laboratory momentum of the kaon meson is greater than 300 MeV.