We employ a quark model based on quantum chromodynamics and tested against noncharmed baryons to predict masses and decay rates of ground-state and excited baryons containing one charmed quark. Among other conclusions, the calculations indicate that the orbitally excited ${\Lambda }_c$ $\frac{1}{2^{-}}$ analogous to the $\Lambda \mathrm{}\left(1405\right)\mathrm{}$ is stable against strong decays.

• Received 7 March 1979

DOI:https://doi.org/10.1103/PhysRevD.20.768