Topological diagrammatic approach for charmed baryon decays

Abstract

There exist two distinct ways in realizing the approximate SU(3) flavor symmetry of QCD to describe the two-body nonleptonic decays of charmed baryons, the irreducible SU(3) approach (IRA) and the topological diagram approach (TDA). The TDA has the advantage that it is more intuitive, graphic and easier to implement model calculations. We perform a global fit to the experimental data of two-body charmed baryon decays based on the TDA and discuss its equivalence with the IRA and their phenomenological implications.