We present the current status of the MILC collaboration's calculations of the properties of the light pseudoscalar meson sector. We use asqtad staggered ensembles with 2+1 dynamical flavors down to a≈0.045 fm and light quark mass down to 0.05 ms. Here we describe fits to the data using chiral forms from SU(3) chiral perturbation theory, including all staggered taste violations at NLO and the continuum NNLO chiral logarithms. We emphasize issues of convergence of the chiral expansion.
@article{arxiv.1012.0868,
title = {Results for light pseudoscalar mesons},
author = {MILC Collaboration and A. Bazavov and C. Bernard and C. DeTar and X. Du and W. Freeman and Steven Gottlieb and Urs M. Heller and J. E. Hetrick and J. Laiho and L. Levkova and M. B. Oktay and J. Osborn and R. Sugar and D. Toussaint and R. S. Van de Water},
journal= {arXiv preprint arXiv:1012.0868},
year = {2015}
}
Comments
7 pp., 6 figs, presented at Lattice 2010, June 14-19, 2010, Villasimius, Italy