Baryon spectroscopy in the non-relativistic quark model with a one-gluon exchange potential

Publisher Website
Google Scholar
Abstract
In the three-quark shell model with SU(6)(X)O(3) symmetry the baryonic states assigned to the (56,0+)0 and (70,1-)1 multiplets are discussed. Superposed on the confining potential, the short-range quark-quark interaction is taken to be Coulomb-like. In order to reproduce the large splitting between the two singlet Lambda states in the (70,1-)1 multiplet, an extra spin-orbit term originating from the confining potential is introduced, which is supposed to come from scalar coupling, SU(3) breaking is put in by taking different masses for the strange and non-strange quarks, and is treated in an exact way. General mass formulae for all (56,0+)0 and (70,1-)1 resonances are given and a fit to the spectrum has been performed.
Keywords