Theory of Semi-- and Nonleptonic Decays of Heavy Mesons

Abstract

I review some of the recent developments in the theoretical description of weak inclusive decays of heavy mesons. The topics cover the value of $|V_{cb}|$ as extracted from semileptonic inclusive decays and a short discussion of the theoretical errors. I also present the results of a recent calculation of next--to--leading order corrections to nonleptonic inclusive B decays which allows an improved prediction of the semileptonic branching ratio of B mesons.

Comments: (Talk held at ICHEP 94, Glasgow, Scotland, July 94). 6 p., TUM-T31-74/94, Latex, uses epsf.sty and a4wide.sty, one uuencoded figure included