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

A. G. Akeroyd·S. Recksiegel
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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.

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A. G. Akeroyd, S. Recksiegel. 2002-02-06. Direct CP asymmetry of b -> s gamma and b -> d gamma in models beyond the Standard Model. https://doi.org/10.1016/s0920-5632(02)01720-6

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