COVARIANT QUARK-MODEL FOR THE BARYONS

A family of simply solvable covariant quark models for the baryons is presented. With optimal parameter choices the models reproduce the emp irical spectra of the baryons in all flavor sectors to an accuracy of a few percent. Complete spectra are obtained for all states of the str ange, charm and beauty hyperons with L less than or equal to 2, The ma gnetic moments and axial coupling constants of the ground state baryon s correspond to those of conventional quark models. We construct curre nt-density operators that are consistent with empirical nucleon form f actors at low and medium momenta. (C) 1998 Elsevier Science B.V.