One leptoquark to rule them all: a minimal explanation for RD(∗), RK and (g−2)[mu]

We show that by adding a single new scalar particle to the Standard Model, a TeV-scale leptoquark with the quantum numbers of a right-handed down quark, one can explain in a natural way three of the most striking anomalies of particle physics: the violation of lepton universality in $\bar B\to\bar K...

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Main Authors: Bauer, Martin (Author) , Neubert, Matthias (Author)
Format: Article (Journal) Chapter/Article
Language:English
Published: 2016
In: Arxiv

Online Access:Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1511.01900
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Author Notes:Martin Bauer and Matthias Neubert

MARC

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520 |a We show that by adding a single new scalar particle to the Standard Model, a TeV-scale leptoquark with the quantum numbers of a right-handed down quark, one can explain in a natural way three of the most striking anomalies of particle physics: the violation of lepton universality in $\bar B\to\bar K\ell^+\ell^-$ decays, the enhanced $\bar B\to D^{(*)}\tau\bar\nu$ decay rates, and the anomalous magnetic moment of the muon. Constraints from other precision measurements in the flavor sector can be satisfied without fine-tuning. Our model predicts enhanced $\bar B\to\bar K^{(*)}\nu\bar\nu$ decay rates and a new-physics contribution to $B_s\!-\!\bar B_s$ mixing close to the current central fit value. 
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