Exclusive Nonleptonic Decays of Heavy Mesons in QCD

Abstract

We use operator product expansion and QCD light-cone sum rules to estimate the amplitude of the decay $B\to J/\psi K$ taking into account leading nonfactorizable contributions. The result is very similar to the estimate obtained earlier from a four-point QCD sum rule. We discuss applications of this method to other nonleptonic $B$ decay modes.

Comments: 11 pages, LaTex, 2 figures, epsf; talk presented by A. Khodjamirian at the 3rd Workshop ``Continuous Advances in QCD'', Minneapolis, April 1998