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Volume 273 - 16th International Conference on B-Physics at Frontier Machines (BEAUTY2016) - Semileptonic and rare decays
BSM fits for rare B decays
B. Capdevila, S. Descotes-genon,* L. Hofer, J. Matias, J. Virto
*corresponding author
Full text: pdf
Published on: 2016 November 15
Abstract
Recently, the LHC has found several anomalies in exclusive semileptonic $b\to s\ell^+\ell^-$ decays, which can be analysed through a global analysis of the relevant decay modes. After a discussion of the hadronic uncertainties entering the theoretical predictions, we present the interpretation of the data in terms of generic new physics scenarios and we discuss model-independent fits of the corresponding Wilson coefficients to the data. In some cases, the best fit point is preferred over the Standard Model by a global significance of 4$\sigma$ or more. Based on these results, the discrimination between high-scale new physics and low-energy QCD effects as well as the study of lepton-flavour universality violation are discussed.
DOI: https://doi.org/10.22323/1.273.0044
Open Access
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