CP Violating B ---> s Gamma Decay in Supersymmetric Models

Abstract

Supersymmetric models with nonuniversal down type squark masses can enrich the chiral structure and CP violating phenomena in $b\to s\gamma$ decays. Direct CP violation in $b\to s\gamma$, mixing induced CP violation in radiative $B_{d,s}$ decays (such as $B_s\to \varphi \gamma$ and $B_d\to K_{1,2}^{\ast }\gamma$), and $\Lambda$ polarization in ${\Lambda }_b\to \Lambda \gamma$ can be substantially different from the Standard Model. Future experiements at $e^{+}{e}^{-}$ and hadronic B factories will give important information on the underlying theory for radiative $b$ decays.

Comments: 19 pages, 8 figures, Latex. To appear in Phys. Rev. D