$k_T$ factorization of exclusive $B$ meson decays

Abstract

I review recent progress on exclusive $B$ meson decays made in the perturbative QCD approach, concentrating on the evolution of the $B$ meson wave function in $k_T$ factorization, radiative decays, polarizations in $VV$ modes, and new physics effect in $B\to \varphi K_S$.

Comments: 14 pages, talk presented at 32nd International Conference on High Energy Physics, Aug. 16-22, 2004, Beijing, China