PQCD factorizaiton of two-body B decays

Abstract

I review the known approaches to two-body nonleptonic $B$ meson decays, including factorization assumption, modified factorization assumption, QCD factorization, and perturbative QCD factorization. Important phenomenological aspects of these approaches are emphasized.

Comments: talks presented at the International Conference on Flavor Physics, Zhangjiajie, China, May, 2001, at the International Workshop on Exclusive $B$ Decays, Regensburg, Germany, July, 2001, at the International Conference on Light-Cone Physics, Trento, Italy, Sep. 2001, and at the 5th KEK International Topic Conference, KEK, Japan, Nov. 2001