Perturbative QCD analysis of exclusive B meson decays
نویسنده
چکیده
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 → Kγ, 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 B(B → Kγ), we extract the B meson wave function, which possesses a sharp peak in the region with a small momentum fraction. talk presented at the Fourth Workshop on Particle Physics Phenomenology, Kaohsiung, Taiwan, 1998
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تاریخ انتشار 1998