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

Authors :
Hui-Min Yang
Hua-Xing Chen
Er-Liang Cui
Atsushi Hosaka
Qiang Mao
Source :
European Physical Journal C: Particles and Fields, Vol 80, Iss 2, Pp 1-17 (2020)
Publication Year :
2020
Publisher :
SpringerOpen, 2020.

Abstract

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 $$\mathbf {6}_F$$ 6F representation. In Cui et al. (Phys Rev D 99:094021, 2019) we have studied their mass spectrum and pionic decays, and found that the $$\varSigma _{b}(6097)$$ Σb(6097) and $$\varXi _{b}(6227)$$ Ξb(6227) can be well interpreted as P-wave bottom baryons of $$J^P = 3/2^-$$ JP=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 $$\varXi _b({5/2}^-)$$ Ξb(5/2-) , that is the $$J^P = 5/2^-$$ JP=5/2- partner state of the $$\varXi _{b}(6227)$$ Ξb(6227) , in the $$\varXi _b({5/2}^-) \rightarrow \varXi _b^{*}\rho \rightarrow \varXi _b^{*}\pi \pi $$ Ξb(5/2-)→Ξb∗ρ→Ξb∗ππ decay process. Its mass is $$12 \pm 5$$ 12±5 MeV larger than that of the $$\varXi _{b}(6227)$$ Ξb(6227) .

Details

Language :
English
ISSN :
14346044 and 14346052
Volume :
80
Issue :
2
Database :
Directory of Open Access Journals
Journal :
European Physical Journal C: Particles and Fields
Publication Type :
Academic Journal
Accession number :
edsdoj.3340f97451d04094bf17e012220d60c3
Document Type :
article
Full Text :
https://doi.org/10.1140/epjc/s10052-020-7637-z