Review of Lepton Universality tests in $B$ decays

Simone Bifani , Sébastien Descotes-Genon (1) , Antonio Romero Vidal , Marie-Hélène Schune (2)

1 LPT - Laboratoire de Physique Théorique d'Orsay [Orsay]
2 LAL - Laboratoire de l'Accélérateur Linéaire

Several measurements of tree- and loop-level -hadron decays performed in the recent years hint at a possible violation of Lepton Universality. This article presents an experimental and theoretical overview of the current status of the field.

Mots clés: review; p p: scattering; electron positron: annihilation; p p: colliding beams; electron positron: colliding beams; B: semileptonic decay; B: rare decay; lepton: flavor: universality; universality: violation; quark: flavor; effective field theory; effective Hamiltonian; form factor; dilepton: mass spectrum; B: branching ratio; branching ratio: ratio; new physics; CERN LHC Coll; B-factory; bibliography; interpretation of experiments; B --> strange meson lepton antilepton; B --> charmed meson lepton neutrino

Domaines: Physique des Hautes Energies - Expérience [hep-ex]; Physique des Hautes Energies - Phénoménologie [hep-ph]

Simone Bifani, Sébastien Descotes-Genon, Antonio Romero Vidal, Marie-Hélène Schune. Review of Lepton Universality tests in $B$ decays. J.Phys.G, 2019, 46 (2), pp.023001. ⟨10.1088/1361-6471/aaf5de⟩. ⟨hal-01886111⟩