Speaker
Prof.
Steven Gottlieb
(Indiana University)
Description
The MILC Collaboration has completed production running of electromagnetic effects on light mesons using asqtad improved staggered quarks. In these calculations, the photons are quenched using the non-compact formalism. Four lattice spacings from 0.12 fm to 0.045 fm have been used. Finite volume effects with $a=0.12$ fm have been studied with spacial sizes $L_s=12$, 16, 20, 28, 40, and 48. The chiral-continuum fit of the meson masses allows calculation of corrections to Dashen's theorem and determination of the ratio of up to down quark masses.
Primary author
Prof.
Steven Gottlieb
(Indiana University)
Co-authors
Dr
Alexei Bazavov
(University of California, Riverside/University of Iowa)
Prof.
Carleton DeTar
(University of Utah)
Prof.
Claude Bernard
(Washington University)
Prof.
Doug Toussaint
(University of Arizona)
Dr
Elizabeth Freeland
(School of the Art Institute of Chicago)
James Osborn
(ANL)
Prof.
John Laiho
(Syracuse University)
Dr
Ran Zhou
(Fermilab)
Prof.
Robert Sugar
(UCSB)
Dr
Ruth Van de Water
(Fermilab)
Prof.
Subhashish Basak
(NISER)
Dr
Urs Heller
(American Physical Society)
