OCTET BARYON MAGNETIC-MOMENTS IN THE CHIRAL QUARK-MODEL WITH CONFIGURATION MIXING

The Coleman-Glashow sum-rule for magnetic moments is always fulfilled in the chiral quark model, independently of SU(3) symmetry breaking. T his is due to the structure of the wave functions, coming from the non -relativistic quark model. Experimentally, the Coleman-Glashow sum-rul e is violated by about ten standard deviations. To overcome this probl em, two models of wave functions with configuration mixing are studied . One of these models violates the Coleman-Glashow sum-rule to the rig ht degree and also reproduces the octet baryon magnetic moments rather accurately. [S0556-2821(98)00101-5].