Phenomenological Application of $k_T$ factorization

Abstract

We discuss applications of the perturbative QCD approach in the exclusive non-leptonic two body B-meson decays. We briefly review its ingredients and some important theoretical issues on the factorization approaches. PQCD results are compatible with present experimantal data for the charmless B-meson decays. We predict the possibility of large direct CP asymmetry in $B^0\to {\pi }^{+}{\pi }^{-}$ $(23\pm 7$ and $B^0\to K^{+}{\pi }^{-}$ $(-17\pm 5$. We also investigate the Branching ratios, CP asymmetry and isopsin symmetry breaking in radiative $B\to (K^{\ast }/\rho )\gamma$ decays.

Comments: 26 pages with revtex4, 13 figures; Added references and corrected typos. Invited plenary talk at the Workshop on High Energy Physics Phenomenology (WHEPP8) India, Institute of Technology, Mumbai (India) January 5-16,2004; To be published in PRAMANA, journal of physics Dec. 2004, Indian Academy of Sciences