Results for light pseudoscalar mesons

Abstract

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 $a\approx 0.045$ fm and light quark mass down to 0.05 $m_s$. 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.

7 pp., 6 figs, presented at Lattice 2010, June 14-19, 2010, Villasimius, Italy

References in corpus (2)

• Scaling studies of QCD with the dynamical HISQ action
• Integrating out strange quarks in ChPT

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