Description
The results of the tau branching fraction fit performed by HFLAV (also reported in the PDG Review of Particle Physics) are used to update the Lepton Universality tests and to calculate Vus using tau measurements. The lepton universality tests that rely on the leptonic tau branching fractions are updated to the 2nd order QED radiative corrections, in preparation for future improved precision measurements by Belle II and FCC. Recent lattice QCD caluclations are used to compute Vus.
Author
Alberto Lusiani
(SNS and INFN Pisa)
