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An analysis of B_{d,s} mixing angles in presence of New Physics and an update of Bs -> K0* anti-K0* by Descotes-Genon, Sebastien; Matias, Joaquim; Virto, Javier is a scholarly article available to read on EtoBox.

What is An analysis of B_{d,s} mixing angles in presence of New Physics and an update of Bs -> K0* anti-K0* about?

We discuss a simple approach to measure the weak mixing angles phi_s and phi_d of the Bs and Bd systems in the presence of New Physics. We present a new expression that allows one to measure directly the New Physics mixing angles if New Physics contributes significantly to the mixing only. We apply the method to specific penguin-mediated B->PP, B->PV and B ->VV modes. We provide a very stringent and simple bound on the direct CP asymmetries of all these modes, the violation of which is a signal of New Physics in decay. Within the same theoretical framework, an updated prediction for the branching ratio of Bs->K0* anti-K0* is presented, which can be compared with a recent LHCb analysis.

Author

Descotes-Genon, Sebastien; Matias, Joaquim; Virto, Javier

Published

2011

Language

EN