Precision tests of the Standard Model with leptonic and semileptonic   kaon decays
  We present a global analysis of leptonic and semileptonic kaon decays data, including all recent results by BNL-E865, KLOE, KTeV, ISTRA+, and NA48. Experimental results are critically reviewed and combined, taking into account theoretical (both analytical and numerical) constraints on the semileptonic kaon form factors. This analysis leads to a very accurate determination of Vus and allows us to perform several stringent tests of the Standard Model. 
FlaviaNet Working Group on Kaon Decays, M. Antonelli, V. Cirigliano,   P. Franzini, S. Glazov, R. Hill, G. Isidori, F. Mesci...