Perturbative corrections to semileptonic b decay distributions

Abstract

We compute O(alpha_s) and O(alpha_s^n beta_0^{n-1}) (BLM) corrections to the five structure functions relevant for b->q l nu decays and apply the results to the moments of a few distributions of phenomenological importance. We present compact analytic one-loop formulae for the structure functions, with proper subtraction of the soft divergence.

Comments: 23 pages, LaTex. A number of textual changes are added for clarity, a missing definition is provided