Spectrum of heavy baryons in the quark model

Single- and double-heavy baryons are studied in the constituent quark model. The model Hamiltonian is chosen as a standard one with two exceptions: (1) the color-Coulomb term depends on quark masses and (2) an antisymmetric $LS$ (spin-orbit) force is introduced. Model parameters are fixed by the strange baryon spectra, $\mathrm{\ensuremath{\Lambda}}$ and $\mathrm{\ensuremath{\Sigma}}$ baryons. The masses of the observed charmed and bottomed baryons are, then, fairly well reproduced. Our focus is