Abstract
Non-leptonic weak decays of hyperons and of charmed baryons are investigated within the framework of SU(S) and SU(S)w on the assumption that weak interaction is of the current® current form (the currents being of the GIM type) and is CP invariant. We find that SU(S) conveys more information about pv decays than SU(4). Several relations in addition to the ones obtained in SU(4) are obtained. The assumption of 20-dominance at the SU(4) level is no longer required for the pv decays of the hyperons. Unlike in SU(6)w we are able to get the Lee-Sugawara sum rule for pc decays in SU (8) w without being forced to take ~!=0.
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