ANALYSIS OF 2-BODY DECAYS OF CHARMED BARYONS USING THE QUARK-DIAGRAM SCHEME

We give a general formulation of the quark-diagram scheme for the nonl eptonic weak decays of baryons. We apply it to all the decays of the a ntitriplet and sextet charmed baryons and express their decay amplitud es in terms of the quark-diagram amplitudes. We have also given parame trizations for the effects of final-state interactions. For SU(3) viol ation effects, we only parametrize those in the horizontal W-loop quar k diagrams whose contributions are solely due to SU(3)-violation effec ts. In the absence of all these effects, there are many relations amon g various decay modes. Some of the relations are valid even in the pre sence of final-state interactions when each decay amplitude in the rel ation contains only a single phase shift. All these relations provide useful frameworks to compare with future experiments and to find the e ffects of final-state interactions and SU(3) symmetry violations.