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

Authors :: Carleton DeTar
Ludmila Levkova
S. Basak
Alexei Bazavov
Robert L. Sugar
Steven Gottlieb
E. D. Freeland
Ran Zhou
R. S. Van de Water
A. Torok
Doug Toussaint
Jack Laiho
James C. Osborn
Claude Bernard
Javad Komijani
Urs M. Heller
J. Foley
Source :: Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014).
Publication Year :: 2015
Publisher :: Sissa Medialab, 2015.
Abstract: 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.

Subjects :: Quark
Physics
Quantum chromodynamics
Particle physics
Chiral perturbation theory
Photon
Finite volume method
Meson
High Energy Physics::Lattice
High Energy Physics::Phenomenology
Pseudoscalar
Pion
Quantum electrodynamics
High Energy Physics::Experiment

Database :: OpenAIRE
Journal :: Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014)
Accession number :: edsair.doi...........75d666abe36017a66e86a8fa3d71eb0c
Full Text :: https://doi.org/10.22323/1.214.0116

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