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 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) and varXi _{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 varXi _b({5/2}^-), that is the J^P = 5/2^- partner state of the varXi _{b}(6227), in the varXi _b({5/2}^-) rightarrow varXi _b^{*}rho rightarrow varXi _b^{*}pi pi decay process. Its mass is 12 pm 5 MeV larger than that of the varXi _{b}(6227).
Highlights
In Refs. [58,59] we have systematically applied the method of QCD sum rules [53,54] to study P-wave heavy baryons within the heavy quark effective theory (HQET) [55,56,57], where we systematically constructed all the P-wave heavy baryon interpolating fields, and applied them to study the mass spectrum of P-wave heavy baryons
Since the largest uncertainty comes from the light-cone distribution amplitudes of vector mesons, we choose the values for the parameters contained in these amplitudes to be at the renormalization scale 1 GeV, and redo the above calculations to obtain: gΣb−
We have used the method of lightcone sum rules within heavy quark effective theory to study decay properties of P-wave bottom baryons belonging to the flavor 6F representation
Summary
– S-wave decays of flavor 3 ̄ F P-wave heavy baryons into ground-state heavy baryons and pseudoscalar mesons;. – S-wave decays of flavor 6F P-wave heavy baryons into ground-state heavy baryons and pseudoscalar mesons;. One notices that in order to make a complete study of P-wave heavy baryons, we still need to study:. – S-wave decays of flavor 6F P-wave heavy baryons into ground-state heavy baryons and vector mesons. We need to systematically study D-wave and radiative decay properties of P-wave heavy baryons. In the present study we will study S-wave decays of flavor 6F P-wave heavy baryons into ground-state heavy baryons and vector mesons. We will further use the obtained results to investigate the Σb(6097) and Ξb(6227) recently observed by
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