Normalizing inclusive rare B decays

Abstract

The inclusive semileptonic branching ratio is often employed to normalize other inclusive B decays. Using recent determinations of the non-perturbative parameters of the Operator Product Expansion we compute the normalization factor for the branching ratio of B->X_s gamma and find a few percent enhancement with respect to previous determinations.

Comments: 11 pages, 1 fig; minor numerical changes, text improved, matches version to appear in PLB