QED corrections to leptonic decay rates

RBC/UKQCD is preparing a calculation of leptonic decay rates including isospin breaking corrections. We use a perturbative approach to include NLO contributions from QED effects, following N. Carassco et al. We present preliminary results for a contribution to the leptonic decay rate of a pion. We also report on techniques developed to treat the leptonic decays in an all-to-all approach following Foley et al.