Ponente
Descripción
Lepton Flavour Universality (LFU) is an accidental symmetry of the Standard Model (SM) which stablishes that all three lepton families have the same coupling to the electro-weak force carriers. The combination of recent LFU test results in b→clν transitions show a 4.2σ tension with the SM predictions, suggesting this may be the right direction to find New Physics. These results come from ratios of branching fractions between two leptonic channels with a first-generation quark as spectator. However, having a strange quark as the spectator can result in an easier experimental measure. In this poster, I will present the progress made in R(Ds**), a LFU test currently being conducted at LHCb. This analysis will be one of the first of its kind to explore the strange sector.
Abstract
Lepton Flavour Universality (LFU) is an accidental symmetry of the Standard Model (SM) which stablishes that all three lepton families have the same coupling to the electro-weak force carriers. The combination of recent LFU test results in b→clν transitions show a 4.2σ tension with the SM predictions, suggesting this may be the right direction to find New Physics. These results come from ratios of branching fractions between two leptonic channels with a first-generation quark as spectator. However, having a strange quark as the spectator can result in an easier experimental measure. In this poster, I will present the progress made in R(Ds**), a LFU test currently being conducted at LHCb. This analysis will be one of the first of its kind to explore the strange sector.
