Scaling behavior and sea quark dependence of pion spectrum with HYP-smeared staggered fermions

Details Scaling behavior and sea quark dependence of pion spectrum with HYP-smeared staggered fermions Scaling behavior and sea quark dependence of pion spectrum with HYP-smeared staggered fermions

2008-09-07

arxiv.org/abs/0809.1219v2

PoS LATTICE2008:104,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 8 figures, Lattice 2008 proceeding

Scientific paper

We study the pion spectrum (and in particular taste-symmetry breaking within it) using HYP-smeared valence staggered fermions on the coarse and fine MILC lattices (which have asqtad staggered sea quarks). We focus on the dependence on lattice spacing and sea-quark mass. We also update our results on source dependence. Our main conclusion is that on the MILC fine lattices the appropriate power-counting for SU(3) staggered chiral perturbation theory may have discretization errors entering at next-to-leading order rather than at leading-order.

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