Determination of the possible quantum numbers for the newly observed Ξb(6227)0 state

The LHCb Collaboration recently reported the observation of a new excited bottom baryon Xi(b)(6227)(0) and announced an improvement in the measurements related to the previously observed Xi(b)(6227)(-) state. We conduct an analysis for Xi(b)(6227)(0) state considering it as isospin partner of the Xi(b)(6227)(-) resonance and possibly 1P or 2S excited state with spin J = 3/2. The corresponding masses for both possibilities have consistent results with the experimental data, indicating that only with the mass sum rules, one can not make exact decision on the nature and quantum numbers of this state. To go further, the decays of these possible excited states to Xi(-)(b)pi(+) final state are also considered and the relevant strong coupling constants are extracted from the light cone sum rules. The obtained decay width values support the possibility of Xi(b)(6227)(0) to be the 1P excited state of Xi(b)(5945)(0) baryon.

Automated summary

The LHCb Collaboration reported the observation of a new excited bottom baryon Xi(b)(6227)(0) and improved measurements related to the previously observed Xi(b)(6227)(-) state. Analysis suggests that Xi(b)(6227)(0) could be the 1P excited state of Xi(b)(5945)(0) baryon, with consistent mass results but unable to determine exact nature and quantum numbers based on mass sum rules alone. Additionally, decay widths of possible excited states to the Xi(-)(b)pi(+) final state were considered, supporting the potential of Xi(b)(6227)(0) as a 1P excited state.