Determination of |Vus| from the tau lepton branching fractions
  We determine the Cabibbo-Kobayashi-Maskawa matrix (CKM) element |Vus| in several different ways using updated preliminary HFAG averages for the tau lepton branching fractions and we compare the results with the determinations obtained from the kaon decays and from the unitarity of the CKM matrix. 
Alberto Lusiani
hep-ex hep-ph