Radiative Corrections to Nonleptonic Inclusive B Decays and the Semileptonic Branching Ratio of B Mesons

Abstract

We calculate the radiative corrections to the nonleptonic inclusive B decay mode $b\to cud$ taking into account the charm quark mass. The corrections increase the decay rate by (4--8)\%, depending on the renormalization point. Using these results, we obtain an improved theoretical prediction for the semileptonic branching ratio of B mesons. This talk relies on work done in collaboration with E. Bagan, V.M.\ Braun and P. Gosdzinsky.

Comments: Talk given at QCD 94, Montpellier July 94, 5 p., TUM-T31-74/94, uses epsf.sty and a4wide.sty, 2 uuencoded PS figures included