arXiv:1103.0081·v1·High Energy Physics — Phenomenology
The exclusive rare decay b->s gamma of heavy b-Baryons
Yong-lu Liu🇨🇳 · Long-fei Gan🇨🇳 · Ming-qiu Huang🇨🇳
Abstract
We present an analysis on the exclusive rare radiative decay modes Sigma_b->Sigma gamma and Xi_b->Xi gamma. The transition form factors which parameterize these processes are calculated using QCD light-cone sum rules. The decay widths we predict are Gamma(Sigma_b->Sigma gamma)=(7.21\pm0.04)\times10^{-18}GeV} and Gamma(Xi_b->Xi gamma)=(1.34\pm0.07)\times10^{-16}GeV. The Branching ratio of Xi_b->Xi gamma is predicted to be Br(\Xi_b->Xi gamma)=(3.03\pm0.10)\times10^{-4}.
Comments: 10 pages, 4 figures; to appear in Phys. Rev. D