Current algebra and nonleptonic weak decays of charmed baryons

The nonleptonic weak-decay rates of Λsub(c)sup(+) (c[ud]), A+(c[su]), A0(c[sd]) and T0(css) have been calculated. Current algebra and an evaluation of the matrix elements are used in the context of nonrelativistic SU6 wave functions. These matrix elements are evaluated with and without including short-distance QCD effects. The results are compared with the available experimental data. It is found that the naive quark Hamiltonian, without short-distance QCD effects included, gives results which are in reasonable agreement with experiment, whereas the QCD-corrected Hamiltonian gives widths which are much too large. The results are also compared with earlier calculations using the MIT bag model and the quark model