No abstract

In this work, we systematically study the mass spectra and strong decays of 1P and 2S charmed and charmed-strange baryons in the framework of non-relativistic constituent quark models. With the light quark cluster-heavy quark picture, the masses are simply calculated by a potential model. The strong decays are studied by the EichtenHill-Quigg decay formula. Masses and decay properties of the well-established 1S and 1P states can be reproduced by our method.

Selecting the newly observed Ξ b (6227) − by LHCb as a study example, we decode its inner structure by giving the mass spectrum analysis and the investigation of its two-body strong decay behaviors. Our result indicates that the Ξ b (6227) − is a good candidate of the P-wave Ξ ′ b state with J P = 3/2 − or 5/2 − . In addition, we further provide the information of the properties of the partners of the Ξ b (6227) − . These predicted states include three 2S states and the remaining 1P states in the bottom-strange baryon family. The calculated sizable Okubo-Zweig-Iizuka−allowed decay widths of these partners show that the experimental search for them becomes possible via LHCb. We have a reason to believe that the present study can be treated as a start point for constructing the highly excited bottom baryon spectroscopy.