Tau polarization in baryonic semileptonic decays supplies the leading sensitivity to lift EFT degeneracies unresolved by meson measurements in b to c tau nu transitions.
Revisiting Lepton Flavour Universality in B Decays
3 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
Lepton flavour universality (LFU) in B-decays is revisited by considering a class of semileptonic operators defined at a scale Lambda above the electroweak scale v. The importance of quantum effects, so far neglected in the literature, is emphasised. We construct the low-energy effective Lagrangian taking into account the running effects from Lambda down to v through the one-loop renormalization group equations (RGE) in the limit of exact electroweak symmetry and QED RGEs from v down to the 1 GeV scale. The most important quantum effects turn out to be the modification of the leptonic couplings of the vector boson Z and the generation of a purely leptonic effective Lagrangian. Large LFU breaking effects in Z and tau decays and visible lepton flavour violating (LFV) effects in the processes tau -> mu ll, tau -> mu rho, tau -> mu pi and tau -> mu eta^(') are induced.
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hep-ph 3years
2026 3verdicts
UNVERDICTED 3representative citing papers
Next-to-leading order spurion effects in a minimal lepton flavor deconstruction model induce observable charged lepton flavor violation, lepton flavor universality violation, and electric dipole moments at multi-10 TeV scales.
Review advocating correlations among flavour observables as direct tests for specific new physics models beyond global fits to Wilson coefficients.
citing papers explorer
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Lifting Effective-Field-Theory Degeneracies in Semileptonic Heavy-Baryon Decays
Tau polarization in baryonic semileptonic decays supplies the leading sensitivity to lift EFT degeneracies unresolved by meson measurements in b to c tau nu transitions.
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Anatomy and Phenomenology of Minimal Flavor Deconstruction in the Lepton Sector
Next-to-leading order spurion effects in a minimal lepton flavor deconstruction model induce observable charged lepton flavor violation, lepton flavor universality violation, and electric dipole moments at multi-10 TeV scales.
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Hunting New Animalcula with Flavour Changing Processes
Review advocating correlations among flavour observables as direct tests for specific new physics models beyond global fits to Wilson coefficients.