TY - JOUR
T1 - Electromagnetic splitting of charged and neutral mesons
AU - Torok, Aaron
AU - Basak, S.
AU - Bazavov, A.
AU - Bernard, C.
AU - DeTar, C.
AU - Freeland, E.
AU - Freeman, W.
AU - Gottlieb, Steven
AU - Heller, U. M.
AU - Hetrick, J. E.
AU - Kindratenko, Volodymyr
AU - Laiho, J.
AU - Levkova, L.
AU - Oktay, M.
AU - Osborn, J.
AU - Shi, Guochun
AU - Sugar, R. L.
AU - Toussaint, D.
AU - Van De Water, R. S.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2010
Y1 - 2010
N2 - We extend MILC's initial study of the electromagnetic splitting of charged and neutral mesons, and the violation of Dashen's theorem. Meson masses are calculated using the MILC Nf = 2 + 1, asqtad SU(3) gauge configurations, and independently generated U(1) gauge configurations. The meson correlators are calculated using SU(3) ×U(1) gauge fields. A large fraction of the meson correlators are calculated using an implementation of the MILC staggered multi-mass inverter that runs on a single NVIDIA GPU in double precision. When the current analysis is complete, we will have results at three lattice spacings, from about 0.15 to 0.09 fm, with several light quark masses at each lattice spacing. Once electromagnetic effects are included in the corresponding rooted, staggered chiral perturbation theory calculations, we should have excellent control over the chiral and continuum limits.
AB - We extend MILC's initial study of the electromagnetic splitting of charged and neutral mesons, and the violation of Dashen's theorem. Meson masses are calculated using the MILC Nf = 2 + 1, asqtad SU(3) gauge configurations, and independently generated U(1) gauge configurations. The meson correlators are calculated using SU(3) ×U(1) gauge fields. A large fraction of the meson correlators are calculated using an implementation of the MILC staggered multi-mass inverter that runs on a single NVIDIA GPU in double precision. When the current analysis is complete, we will have results at three lattice spacings, from about 0.15 to 0.09 fm, with several light quark masses at each lattice spacing. Once electromagnetic effects are included in the corresponding rooted, staggered chiral perturbation theory calculations, we should have excellent control over the chiral and continuum limits.
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M3 - Conference Article
AN - SCOPUS:85055332965
SN - 1824-8039
VL - 105
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 28th International Symposium on Lattice Field Theory, Lattice 2010
Y2 - 14 June 2010 through 19 June 2010
ER -