Eur. Phys. J. C 69, 399-424 (2010)
https://doi.org/10.1140/epjc/s10052-010-1406-3

An evaluation of |V _us | and precise tests of the Standard Model from world data on leptonic and semileptonic kaon decays

¹ Dep. ECM and ICC, Universitat de Barcelona, 08028, Barcelona, Spain
² Laboratori Nazionali di Frascati dell’INFN, 00044, Frascati, RM, Italy
³ Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
⁴ Institut für Physik, Universität Mainz, 55099, Mainz, Germany
⁵ Dipartimento di Fisica, Università di Pisa e Sezione dell’INFN di Pisa, 56100, Pisa, Italy
⁶ Institute for High Energy Physics, 142284, Protvino, Russia
⁷ Departament de Física Teòrica, IFIC, Universitat de València—CSIC, 46071, València, Spain
⁸ Fakultät für Physik, Universität Wien, 1090, Vienna, Austria

Matthew.Moulson@lnf.infn.it

Received: 13 May 2010
Revised: 15 June 2010
Published online: 19 August 2010

Abstract

We present a global analysis of leptonic and semileptonic kaon decay data, including all recent results published by the BNL-E865, KLOE, KTeV, ISTRA+ and NA48 experiments. This analysis, in conjunction with precise lattice calculations of the hadronic matrix elements now available, leads to a very precise determination of |V _us | and allows us to perform several stringent tests of the Standard Model.