NN Scattering Phase Shifts in a Chiral Constituent Quark Model
arXiv:hep-ph/0006012 · doi:10.1016/S0375-9474(00)00599-6
Abstract
We study the nucleon-nucleon interaction within a chiral constituent quark model which reproduces succesfully the baryon spectra. We calculate the 3S1 and 1S0 phase shifts by using the resonating group method. They clearly indicate the presence of a strong repulsive interaction at short distance, due to the spin-flavor symmetry of the quark-quark interaction and of the quark interchange between the two interacting nucleons. A sigma-exchange quark-quark interaction, providing a medium-range attraction, helps to get closer to the experimental phase shifts.
16 pages, 6 eps figures and 1 table (with RevTeX)