Large and Fun CP Violation in B Meson Decays: Where to Search?

Abstract

The best place to search for direct CP violation is the already observed charmless $b\to s$ modes. In SM with FSI, $a_{CP}$ in $K\pi$ modes could be as large as 20-30% but differ in sign between $K^{-}{\pi }^{+}/K^{-}{\pi }^0$ and ${\bar{K}}^0{\pi }^{-}$. We illustrate possible New Physics effects that could lead to $a_{CP}$ of order 40-60% in $K\pi$ and $\varphi K$ modes distinguishable from FSI. $b\to s\gamma$ modes can also exhibit interesting asymmetries.

Comments: 12 pages, latex, 2 figures (eps files included). Slightly expanded from talks presented at 4th International Workshop on Particle Physics Phenomenology, Kaohsiung, Taiwan, R.O.C., Jun 1998; and Workshop on CP Violation, Adelaide, Australia, Jul 1998