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Linear flavour violation and anomalies in B physics

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Jun 2016Embargo end date: 01 Jan 2015 Italy Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,016 (eissn: 1029-8479,

Authors: Gripaios B.; Nardecchia M.; Renner S.;

doi: 10.1007/jhep06(2016)083 , 10.48550/arxiv.1509.05020

arXiv: http://arxiv.org/abs/1509.05020

handle: 11573/1313200

Linear flavour violation and anomalies in B physics

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Abstract

We propose renormalizable models of new physics that can explain various anomalies observed in decays of B-mesons to electron and muon pairs. The new physics states couple to linear combinations of Standard Model fermions, yielding a pattern of flavour violation that gives a consistent fit to the gamut of flavour data. Accidental symmetries prevent contributions to baryon- and lepton-number-violating processes, as well as enforcing a loop suppression of new physics contributions to flavour violating processes. Data require that the new flavour-breaking couplings are largely aligned with the Yukawa couplings of the SM and so we also explore patterns of flavour symmetry breaking giving rise to this structure.

v2: 28 pages, 10 figures. Added two appendices to make the SU(2) structure of the model clearer, and to discuss Z/photon penguin contributions. Updated a bound on Bs mixing, and added references. Conclusions unchanged. Version to appear in JHEP

Country

Italy

Related Organizations

Sapienza University of Rome
Italy
University of Cambridge
United Kingdom

Keywords

Nuclear and High Energy Physics, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, B-Physics; Beyond Standard Model

Impact byBIP!

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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%