Speaker
Davide Lancierini
(University of Zurich (CH))
Description
I will present a test of lepton flavour universality performed using charm hadron $D^{+}_{(s)}\rightarrow \pi^{+} \phi(\ell^{+}\ell^{-})$ decays, with $\ell$ indicating either an electron or a muon. This measurement, performed using $5.4 \mathrm{fb}^{-1}$ of data collected by the LHCb experiment, validates our understanding of detection efficiencies of low momentum leptons. The clean experimental signature of these decays allows not only for a detailed comparison of data and simulation for reconstructed electrons in the low $q^{2}$ region, but also the mass resolution and h → e misidentification backgrounds, which are all critical aspects of lepton universality measurements at the experiment.
Author
Davide Lancierini
(University of Zurich (CH))