CP Asymmetries in $b\to (s/d)$ Transitions as a Test of CKM CP Violation

Abstract

We point out that a simple test of the mechanism of CP violation can be performed by a measurement of the CP asymmetries in exclusive and inclusive radiative rare decays. We show that the rate asymmetries $\Delta \Gamma =\Gamma (B^{-}\to f\gamma )-\Gamma (B^{+}\to \bar{f}\gamma )$} for certain final states $f$ can be predicted in a theoretically clean way. Some implications for $b\to s{\ell }^{+}{\ell }^{-}$ decays are discussed.

Comments: 12 pages latex, references added