Finite-volume effects and the electromagnetic contributions to kaon and pion masses

Autor:	Basak, S., Bazavov, A., Bernard, C., DeTar, C., Freeland, E., Foley, J., Gottlieb, Steven, Heller, U. M., Komijani, J., Laiho, J., Levkova, L., Osborn, J., Sugar, R. L., Torok, A., Toussaint, D., Van de Water, R. S., Zhou, R.
Rok vydání:	2014
Předmět:	High Energy Physics - Lattice High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	We report on the MILC Collaboration calculation of electromagnetic effects on light pseudoscalar mesons. The simulations employ asqtad staggered dynamical quarks in QCD plus quenched photons, with lattice spacings varying from 0.12 to 0.06 fm. Finite volume corrections for the MILC realization of lattice electrodynamics have been calculated in chiral perturbation theory and applied to the lattice data. These corrections differ from those calculated by Hayakawa and Uno because our treatment of zero modes differs from theirs. Updated results for the corrections to "Dashen's theorem" are presented. Comment: 7 pages, 2 figures. Presented at Lattice 2014, Columbia University, June 23-28, 2014
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1409.7139 Zobrazit plný text záznamu View this record from Arxiv