Quark Model of Heavy Baryons

We use a nonrelativistic quark model to examine the spectrum of heavy baryons. The model provides a good description of the known states in the heavy $\Lambda_Q$, $\Sigma_Q$ and $\Omega_Q$ spectra, and it successfully predicts, without fitting, a number of states recently seen. When applied to the heavy cascade ($\Xi_Q$) spectrum, the model can be used to determine the sextet-antitriplet mixing in the known states. We briefly discuss some aspects of this mixing. This work is supported by the U. S. Department of Energy, Office of Nuclear Physics, under contract No. DE-AC02-06CH11357.