RBC/UKQCD is preparing a calculation of leptonic decay rates including isospin breaking corrections using a perturbative approach to include NLO contributions from QED effects. We present preliminary numerical results for a contribution to the leptonic pion decay rate and report on exploratory studies of computational techniques based on all-to-all propagators.
@article{arxiv.1902.00295,
title = {QED corrections to leptonic decay rates},
author = {P. A. Boyle and V. Guelpers and A. Juettner and C. Lehner and F. O hOgain and A. Portelli and J. P. Richings and C. T. Sachrajda},
journal= {arXiv preprint arXiv:1902.00295},
year = {2019}
}