Possible Large Direct CP Violations in Charmless B-Decays

Details Possible Large Direct CP Violations in Charmless B-Decays Possible Large Direct CP Violations in Charmless B-Decays

2002-09-02

arxiv.org/abs/hep-ph/0209014v2

Phys.Rev. D67 (2003) 054009

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, latex, 8 figures and 8 tables, typos corrected and added more tables and references. Presented at the 3rd workshop o

Scientific paper

10.1103/PhysRevD.67.054009

We discuss the perturbative QCD approach for the exclusive two body B-meson decays to light mesons. We briefly review its ingredients and some important theoretical issues on factorization approach. We show numerical results which are compatible with present experimantal data for the charmless B-meson decays. Specailly we predict the possibility of large direct CP violation effects in $B^0 \to \pi^{+}\pi^{-}$ $(23\pm7 %)$ and $B^0\to K^{+}\pi^{-}$ $(-17\pm5%)$. In the last section we investigate two methods to determine the weak phases $\phi_2$ and $\phi_3$ from $B \to \pi\pi,K\pi$ processes. We obtain bounds on $\phi_2$ and $\phi_3$ from present experimental measurements.

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