2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41002I 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.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. 2001High Energy Physics - Phenomenologytext