Speaker
Dr
Lars Hofer
(Universität Würzburg)
Description
The 2.5 sigma discrepancy between theory and experiment observed in the difference A_CP(B^- --> pi^0 K^-)-A_CP(Bbar^0 --> pi^+ K^-) can be explained by a new electroweak penguin amplitude. We demonstrate that in presence of a such a new electroweak penguin amplitude the branching ratios of the purely isospin-violating decays B_s --> phi rho^0 and B_s --> phi pi^0 can be enhanced by up to an order of magnitude, without violating any constraints from other hadronic B decays. This makes them very interesting modes for LHCb and future B factories. We discuss both a model-independent analysis and a study within realistic New Physics models such as a modified-Z^0-penguin scenario, a model with an additional Z' boson and the Minimal Supersymmetric Standard Model (MSSM).
Authors
Dr
Dominik Scherer
(Karlsruhe Institute of Technology)
Dr
Lars Hofer
(Universität Würzburg)
Dr
Leonardo Vernazza
(Universität Mainz)
