Heavy baryons in the relativized quark model with chromodynamics

Following the work of Capstick and Isgur [Phys. Rev. D 34, 2809 (1986)], we systematically study the mass spectrum of the heavy baryons in the relativized quark potential model with chromodynamics. Besides the original Godfrey-Isgur (GI) model, we also adopt a modified GI model which replaces the linear confinement by a screened one. The two models give similar results in our work. All heavy baryons observed so far can be explained as three-quark states. In particular, we identify the Omega c ( 3000 ) /Omega b ( 6316 ) , Omega c ( 3050 ) /Omega b ( 6330 ) , Omega c ( 3065 ) /Omega b ( 6340 ) , and Omega c ( 3090 ) /Omega b ( 6350 ) states as the p lambda excitations with quantum numbers 1/2-, / 2 - , 3/2-, / 2 - , 3/2-, / 2 - , and 5/2-. / 2 - . The Omega c ( 3120 ) is a 3/2- / 2 - state with the p rho excitation, whose bottom partner is predicted to be Omega b ( 6446 / 6457, 3/2-). / 2 - ) . The higher state Omega c ( 3188 ) is the 2s lambda s lambda excitation with quantum numbers 1/2+, / 2 + , and Omega c ( 3327 ) is a d lambda excitation with quantum numbers 3/2+ / 2 + or 5/2+. / 2 + .