Constraints due to partial conservation of axial-vector current and charmed-baryon couplings

The PCAC (partial conservation of axial-vector current) consistency conditions are derived for inelastic processes involving charmed baryons. Numerical estimates of the conditions for the processes πC0 → πC0, πC1 → πC1, πC0 → πC1, and πC0 → πC/sup asterisk/1, determined with the help of observed charmed-baryon contributions, are used in determining the pion--charmed-baryon coupling strengths. We find that the value of g2/sub piC/1/sub C/1/4π agrees well with the previously determined values obtained with the potential-model calculations. The decay widths of C1 and C/sup asterisk/1 into C0π channel also compare well with the results of Lee, Quigg, and Rosner. We also note that the remaining couplings g/sub piC/1/sub C/*1 and g/sub piC/*1/sub C/*1 have very small values and thus C/sup asterisk/1 completely decouples from C1π and C/sup asterisk/1π channels