QCD Calculation of $B$ Meson Form Factors and Exclusive Nonleptonic Decays

Abstract

The method of QCD sum rules has proven to be particularly useful in heavy quark physics, where a small distance scale is provided by the inverse heavy quark mass. We present two new examples for the application of this method to B-physics: a calculation of the heavy-to-light form factors $B\to \pi ,K$ and an estimate of the weak decay amplitude for $B\to J/\psi K$ beyond the factorization approximation.

Comments: 14 pages +4 figures available upon request as .ps file , LaTeX ,( presented by A. Khodjamirian at the Workshop "Continuous Advances in QCD", TPI, University of Minnesota, Minneapolis, February 18-20, 1994) MPI-PhT/94-26, LMU-05/94