Direct CP asymmetry of b -> s gamma and b -> d gamma in models beyond the Standard Model

Abstract

We study the direct CP asymmetry of the decays b -> s gamma and b -> d gamma in the context of two models: i) a supersymmetric (SUSY) model with unconstrained SUSY phases, and ii) a model with a single generation of vector quarks. In both the above models we show that b -> d gamma can sizeably influence the combined asymmetry (i.e. that of a sample containing both b -> s gamma and b -> d gamma), and in case (ii) may in fact be the dominant contribution.

3 pages, 6 figures, to appear in the proceedings of KEKTC5

References in corpus (3)

• CP Asymmetries in $b\to (s/d)$ Transitions as a Test of CKM CP Violation
• Effect of Supersymmetric phases on the Direct CP Asymmetry of B -> X_d γ
• Direct CP Asymmetry of B -> X_d,s γin a model with Vector quarks