1998/10/02 by Hsiang-nan Li, Li, Hsiang-nan
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9810222
numerical outcomes are revised
arxiv created 1998/10/27 · arxiv updated 2009/11/30
We review the perturbative QCD formalism for exclusive heavy meson decays, concentrating on the three-scale factorization theorem for nonleptonic processes. The formalism is then extended to the radiative decay B→ K^*γ, which occurs through penguin diagrams. It is observed that the contributions from the operators other than the penguin one b→ sγ are not negligible. From the best fit to the experimental data of the branching ratio \cal B(B→ K^*γ), we extract the B meson wave function, which possesses a sharp peak in the region with a small momentum fraction.