Decay properties of P-wave heavy baryons accompanied by vector mesons within light-cone sum rules

2019/09/30 by Hui-Min Yang, Hua-Xing Chen, Er-Liang Cui +2 · 1 citation
Physics and Astronomy · #hep-ph #hep-ex #hep-lat

paper · pdf · doi:10.1140/epjc/s10052-020-7637-z

published as Eur. Phys. J. C80 (2020) 80 · 18 pages, 5 figures, 5 tables

arxiv created 2020/03/17 · arxiv updated 2020/03/25

Abstract

We use the method of light-cone sum rules to study decay properties of P-wave bottom baryons belonging to the SU(3) flavor 6_F representation. In Ref.~\citeCui:2019dzj we have studied their mass spectrum and pionic decays, and found that the Σ_b(6097) and Ξ_b(6227) can be well interpreted as P-wave bottom baryons of J^P = 3/2^-. In this paper we further study their decays into ground-state bottom baryons and vector mesons. We propose to search for a new state Ξ_b(5/2^-), that is the J^P = 5/2^- partner state of the Ξ_b(6227), in the Ξ_b(5/2^-) → Ξ_b^*ρ→ Ξ_b^*ππ decay process. Its mass is 12 ± 5~MeV larger than that of the Ξ_b(6227).

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