@article{36cf737142de4779a0530f2d04209927,
title = "Electromagnetic contributions to pseudoscalar masses",
abstract = "We report on the calculation by the MILC Collaboration of the electromagnetic effects on kaon and pion masses. These masses are computed in QCD with dynamical (asqtad staggered) quarks plus quenched photons at three lattice spacings varying from 0.12 to 0.06 fm. The masses are fit to staggered chiral perturbation theory with NLO electromagnetic terms, as well as analytic terms at higher order. We extrapolate the results to physical light-quark masses and to the continuum limit. At the current stage of the analysis, most, but not all, of the systematic errors have been estimated. The main goal is the comparison of kaon electromagnetic splittings to those of the pion, i.e., an evaluation of the corrections to {"}Dashen's theorem.{"} This in turn will allow us to significantly reduce the systematic errors in our determination of mu/md.",
author = "S. Basak and A. Bazavov and C. Bernard and C. DeTar and E. Freeland and W. Freeman and J. Foley and Steven Gottlieb and Heller, {U. M.} and Hetrick, {J. E.} and J. Laiho and L. Levkova and M. Oktay and J. Osborn and Sugar, {R. L.} and A. Torok and Toussaint, {A. D.} and {Van De Water}, {R. S.} and R. Zhou",
note = "Funding Information: We thank Laurent Lellouch and Taku Izubuchi for useful discussions. Computations for this work were carried out with resources provided by the USQCD Collaboration, the Argonne Leadership Computing Facility, and the National Energy Research Scientific Computing Center, which are funded by the Office of Science of the U.S. Department of Energy; and with resources provided by the National Center for Atmospheric Research, the National Institute for Computational Science, the Pittsburgh Supercomputer Center, the San Diego Supercomputer Center, and the Texas Advanced Computer Center, which are funded through the National Science Foundation's XSEDE Program. This work was supported in part by the U.S. Department of Energy under Grants DE-FG02-91ER- 40628, DE-FG02-91ER-40661, DE-FG02-04ER-41298, and DE-FC02-06ER41446; and by the National Science Foundation under Grants PHY07-57333, PHY07-03296, PHY07-57035, PHY07-04171, PHY09-03571, PHY09-70137, and PHY10-67881. This manuscript has been co-authored by an employee of Brookhaven Science Associates, LLC, under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy. For this work we employ QUDA [11]. Funding Information: Acknowledgments: We thank Laurent Lellouch and Taku Izubuchi for useful discussions. Computations for this work were carried out with resources provided by the USQCD Collaboration, the Argonne Leadership Computing Facility, and the National Energy Research Scientific Computing Center, which are funded by the Office of Science of the U.S. Department of Energy; and with resources provided by the National Center for Atmospheric Research, the National Institute for Computational Science, the Pittsburgh Supercomputer Center, the San Diego Supercomputer Center, and the Texas Advanced Computer Center, which are funded through the National Science Foundation{\textquoteright}s XSEDE Program. This work was supported in part by the U.S. Department of Energy under Grants DE-FG02-91ER-40628, DE-FG02-91ER-40661, DE-FG02-04ER-41298, and DE-FC02-06ER41446; and by the National Science Foundation under Grants PHY07-57333, PHY07-03296, PHY07-57035, PHY07-04171, PHY09-03571, PHY09-70137, and PHY10-67881. This manuscript has been co-authored by an employee of Brookhaven Science Associates, LLC, under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy. For this work we employ QUDA [11].; 7th International Workshop on Chiral Dynamics: Theory and Experiment, CD 2012 ; Conference date: 06-08-2012 Through 10-08-2012",
year = "2012",
language = "English (US)",
volume = "2012-August",
journal = "Proceedings of Science",
issn = "1824-8039",
publisher = "Sissa Medialab Srl",
}