Decay properties of -wave bottom baryons within light-cone sum rules

光円錐和則での波ボトムバリオンの崩壊の性質

Yang, H.-M.*; Chen, H.-X.*; Cui, E.-L.*; 保坂淳; Mao, Q.*

Yang, H.-M.*; Chen, H.-X.*; Cui, E.-L.*; Hosaka, Atsushi; Mao, Q.*

We use the method of light-cone sum rules to study decay properties of -wave bottom baryons belonging to the flavor 6 $_{F}$ representation. In Cui et al. (Phys Rev D 99:094021, 2019) we have studied their mass spectrum and pionic decays, and found that the $Sigma_{b}$ (6097) and $Xi_{b}$ (6227) can be well interpreted as -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 $Xi_{b}$ (5/2 $^{-}$ ), that is the $J^{P}$ = 5/2 $^{-}$ partner state of the $Xi_{b}$ (6227), in the $Xi_{b}$ (5/2 $^{-}$ ) $Xi_{b}$ * $Xi_{b}$ * decay process. Its mass is 125 MeV larger than that of the $Xi_{b}$ (6227).

使用言語	:	English
掲載資料名	:	European Physical Journal C
巻	:	80
号	:	2
ページ数	:	p.80_1 - 80_17
発行年月	:	2020/02
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論文URL	:	https://doi.org/10.1140/epjc/s10052-020-7637-z
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