Properties of heavy baryons in the relativistic quark model

The mass spectra of the ground state and excited heavy baryons consisting of two light (u, d, s) and one heavy (c, b) quarks are calculated. The heavy-quark–light-diquark picture is used within the relativistic quark model. The semileptonic heavy-to-heavy decay rates of these baryons are also calculated both in the heavy quark limit and with inclusion of first order 1/mQ corrections. An overall good agreement of the obtained predictions with available experimental data is found. During last few years a significant experimental progress has been achieved in studying heavy baryons with one heavy quark. At present masses of all ground states of charmed baryons as well as of their excitations are known experimentally with rather good precision [1]. The bottom sector is significantly less studied. Only half of the ground state bottom baryon masses are known now. The rate of the semileptonic decay Λb → Λceν has been also measured. The Large Hadron Collider (LHC) will provide us with much more data on properties of ground state and excited bottom baryons. Here we review our studies of masses of the ground state and excited heavy baryons containing one heavy quark and their semileptonic decays. Al