Molecular ${\Omega }_b$ states

Abstract

Motivated by the recent finding of five ${\Omega }_c$ states by the LHCb collaboration, and the successful reproduction of three of them in a recent approach searching for molecular states of meson-baryon with the quantum numbers of ${\Omega }_c$, we extend these ideas and make predictions for the interaction of meson-baryon in the beauty sector, searching for poles in the scattering matrix that correspond to physical states. We find several ${\Omega }_b$ states: two states with masses 6405~MeV and 6465~MeV for $J^P={\frac{1}{2}}^{-}$; two more states with masses 6427~MeV and 6665~MeV for ${\frac{3}{2}}^{-}$; and three states between 6500 and 6820~MeV, degenerate with $J^P={\frac{1}{2}}^{-},{\frac{3}{2}}^{-}$, stemming from the interaction of vector-baryon in the beauty sector.

Comments: 11 pages, 9 tables; v2: discussion added, version accepted for publication in NPB