Status of the MILC calculation of electromagnetic contributions to pseudoscalar masses

S. Basaka, A. Bazavov, C. Bernard, C. DeTar, E. Freeland, Walter Freeman, J. Foley, Steven Gottlieb, U. M. Heller, J. E. Hetrick, John W Laiho, L. Levkov, M. Oktay, J. Osborn, R. L. Sugar, A. Torok, D. Toussaint, R. S. Van De Water, R. Zhou

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Abstract

We calculate pseudoscalar masses on gauge configurations containing the effects of 2+1 flavors of dynamical asqtad quarks and quenched electromagnetism. The lattice spacings vary from 0.12 to 0.06 fm. The masses are fit with staggered chiral perturbation theory including NLO electromagnetic terms. We attempt to extract the fit parameters for the electromagnetic contributions, while taking into account the finite volume effects, and extrapolate them to the physical limit.

Original languageEnglish (US)
Article number119
JournalProceedings of Science
VolumePart F130497
StatePublished - 2012
Externally publishedYes

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Basaka, S., Bazavov, A., Bernard, C., DeTar, C., Freeland, E., Freeman, W., Foley, J., Gottlieb, S., Heller, U. M., Hetrick, J. E., Laiho, J. W., Levkov, L., Oktay, M., Osborn, J., Sugar, R. L., Torok, A., Toussaint, D., Van De Water, R. S., & Zhou, R. (2012). Status of the MILC calculation of electromagnetic contributions to pseudoscalar masses. Proceedings of Science, Part F130497, [119].