P -wave bottom baryons of the SU(3) flavor 6F

Hui-Min Yang,Hua-Xing Chen

doi:10.1103/physrevd.101.114013

Hui-Min Yang, Hua-Xing Chen

Open Access

https://doi.org/10.1103/physrevd.101.114013

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Abstract

We investigate P-wave bottom baryons of the SU(3) flavor 6F, and systematically study their D-wave decays into ground-state bottom baryons and pseudoscalar mesons. Together with [H. X. Chen et al., Phys. Rev. D 91, 054034 (2015)PRVDAQ1550-799810.1103/PhysRevD.91.054034; Q. Mao et al., Phys. Rev. D 92, 114007 (2015)PRVDAQ1550-799810.1103/PhysRevD.92.114007; H. X. Chen et al., Phys. Rev. D 95, 094008 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.094008; H. M. Yang et al.,Eur. Phys. J. C 80, 80 (2020)EPCFFB1434-604410.1140/epjc/s10052-020-7637-z], a rather complete study is performed on both mass spectra and decay properties of P-wave bottom baryons, using the method of QCD sum rules and light-cone sum rules within the framework of heavy quark effective theory. Among all the possibilities, we find four Σb, four Ξb′, and six Ωb baryons, with limited widths and so capable of being observed. Their masses, mass splittings within the same multiplets, and decay properties are extracted (summarized in Table VI) for future experimental searches.

Highlights

Γ 1⁄4 18.1 5.4 1.8 MeV; The strong interaction holds quarks and gluons together inside a single hadron
We investigate P-wave bottom baryons of the SUð3Þ flavor 6F, and systematically study their D-wave decays into ground-state bottom baryons and pseudoscalar mesons
It is similar to the electromagnetic interaction in some aspects, which holds electrons and protons together inside a single atom. The latter leads to the well-known fine structure of line spectra, and it is interesting to investigate whether the former leads to some fine structure of hadron spectra [1,2,3,4]

Summary

INTRODUCTION

Γ 1⁄4 18.1 5.4 1.8 MeV; The strong interaction holds quarks and gluons together inside a single hadron. [68,69,70,71], we have systematically studied their mass spectra and S-wave decay properties using the method of QCD sum rules [72,73] and light-cone sum rules [74,75,76,77,78] within the heavy quark effective theory (HQET) [79,80,81]. These results will be reanalyzed in the present study, so that a rather complete study can be performed on both mass spectra and decay.

P-WAVE BOTTOM BARYONS

D-WAVE DECAY PROPERTIES

SUMMARY AND DISCUSSIONS