Heavy flavor baryon states at the Tevatron

Precision measurements of the masses and widths of the bottom baryon resonances Σb and Σ*b and charm baryons Λc(2595), Λc(2625), Σc(2455), and Σc(2520) are reported. A new measurement of Λb production is described. The studies include the first measurement of the widths and isospin mass splittings of the members of the Σb family. The charm baryons are examined through their strong decays to the Λc ground state, and measurements of their mass differences relative to the ground state, and corresponding decay widths, are reported. The data were collected by the CDF and D0 detectors for 1.96 TeV proton-antiproton collisions during Run II at the Fermilab Tevatron.