The exclusive rare decay b->s gamma of heavy b-Baryons
Abstract
We present an analysis on the exclusive rare radiative decay modes Sigmab->Sigma gamma and Xib->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(Sigmab->Sigma gamma)=(7.210.04)×10-18GeV and Gamma(Xib->Xi gamma)=(1.340.07)×10-16GeV. The Branching ratio of Xib->Xi gamma is predicted to be Br(b->Xi gamma)=(3.030.10)×10-4.
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