Lattice calculation of isospin corrections to Kl2 and Kl3 decays

Abstract

In this talk I discuss the theoretical issues associated with lattice calculations of isospin breaking corrections to hadronic matrix elements. I concentrate on the calculation of QCD isospin breaking effects for the Kl2 and Kl3 decay rates and illustrate the recent lattice results obtained by the RM123 collaboration.

Comments: Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 2012