Decay processes of ground and excited bottom baryons are studied in the ${}^3{P}_0$ nonrelativistic quark model with all model parameters fixed in the sector of light quarks. Using as an input the recent mass of ${\Xi }_b$ and the theoretical masses of ${\Xi }_b^{*}$ and ${\Xi }_b^{\prime }$, narrow decay widths are predicted for the ground-state bottom baryons ${\Xi }_b^{*}$ and ${\Xi }_b^{\prime }$. The work predicts large decay widths, about $100$ MeV for the $\rho$-type orbital excitation states of ${\Xi }_b$.

• Received 8 July 2010

DOI:https://doi.org/10.1103/PhysRevC.82.055201