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Abstract: The inclusive semileptonic branching ratio is often employed to normalizeother inclusive B decays. Using recent determinations of the non-perturbativeparameters of the Operator Product Expansion we compute the normalizationfactor for the branching ratio of B->X s gamma and find a few percentenhancement with respect to previous determinations.



Autor: Paolo Gambino, Paolo Giordano

Fuente: https://arxiv.org/







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