Predictions for lepton flavor universality violation in rare B decays in models with gauged L μ − L τ

By W. Altmannshofer, I. Yavin. 2015

148 citations recorded by the source corpus.

A recent proposal for explaining discrepancies in angular observables in the rare decay $B\ensuremath{\rightarrow}{K}^{*}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ with a gauged ${L}_{\ensuremath{\mu}}\ensuremath{-}{L}_{\ensuremath{\tau}}$ current carried with it the prediction of lepton flavor universality violation in related $B$-meson decays. This prediction gained empirical support with a subsequent hint for lepton flavor universality violation in the $B\ensuremath{\rightarrow}K{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ decay by LHCb. In this short paper we fully quantify the prediction including the associated uncertainties. We also provide new predictions for a variety of additional observables sensitive to lepton flavor universality violation in $B$-meson decays.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/5a5201fb93949bf5f4c6a3980e47132d114e9836

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In Nuclear and High Energy Physics

Citations in the corpus

Review of lepton universality tests in B decays (2018, background): “This was in particular proposed through the difference of angular coefficients or their optimised versions [120, 130, 131].”
Patterns of flavour violation in models with vector-like quarks (2016, methodology): “For ij = bd: ∆Md [dark red], sin(2βd) [dark blue] and Br(B + → πμμ̄)[15, 22] [purple].”
Phenomenology of an SU(2) × SU(2) × U(1) model with lepton-flavour non-universality (2016, background): “Examples of such additional observables are RM , with M = K∗, φ [145,146], defined analogously to RK ,”