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→πC₁*, determined with the help of observed charmed-baryon contributions, ared used in determining the pion-charmed-baryon coupling strengths. We find that the value of g_πC₁C₁²4π agrees well with the previously determined values obtained with the potential-model calculations. The decay widths of C₁ and C₁* into C₀π channel also compare well with the results of Lee, Quigg, and Rosner. We also note that the remaining couplings g_πC₁C₁* and g_πC₁*C₁* have very small values and thus C₁* completely decouples from C₁π and C₁*π channels.