Ground-state andP-wave charmed baryons in a consistent quark model with hyperfine interactions

Masses of the various ground-state and negative-parity baryons containing one charmed quark are calculated using a parameter set developed for the noncharmed baryons. The sole additional parameter needed, $m_c$, is obtained by fitting to the observed mass of ${\Lambda }_c{\frac{1}{2}}^{+}$. The resulting calculated value of the mass of ${\Sigma }_c{\frac{1}{2}}^{+}$ is in reasonable agreement with experimental values.