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arXiv · 1202.2172

Exploring New Physics in C_7-C_7'

S. Descotes-Genon·D. Ghosh·J. Matias·M. Ramon
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Abstract

We discuss the model dependence in the determination of the Wilson coefficient C_7 that governs the radiative electromagnetic decays of B mesons in the Standard Model, by considering various extensions of the effective Hamiltonian used to describe such decays. We include already measured observables like the branching ratios of B->X_s mu+ mu- and B->X_s gamma, the isospin and CP asymmetries in B->K* gamma, as well as A_FB and F_L in B->K* l+ l-, adding the LHCb measurements presented at this conference. We explore the constraints on C_7,C_9,C_10 as well as their chirality-flipped counterparts. We also discuss the transverse asymmetry A_T^2 which, once measured, may help to disentangle some of the scenarios considered.

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S. Descotes-Genon, D. Ghosh, J. Matias, M. Ramon. 2012-02-10. Exploring New Physics in C_7-C_7'. https://arxiv.org/abs/1202.2172

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