Non-perturbative renormalization for general improved staggered bilinears

Details Non-perturbative renormalization for general improved staggered bilinears Non-perturbative renormalization for general improved staggered bilinears

2011-10-25

arxiv.org/abs/1110.5494v1

PoS(Lattice 2011)237

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures, Contribution to the XXIX International Symposium on Lattice Field Theory, July 10-16, 2011, Squaw Valley,

Scientific paper

We present results for non-perturbative renormalization (NPR) factors for staggered fermion bilinears of arbitrary spin and taste. We use "covariant" bilinears which transform irreducibly under the lattice translation and rotation group, and thus do not mix. We form ~ 30 ratios which have no anomalous dimensions, and compare the NPR results to those from 1-loop perturbation theory. We also compare the absolute renormalization factors (which, in general, do have anomalous dimensions) to 1-loop perturbation theory. We use asqtad and HYP-smeared staggered valence fermions on the coarse MILC asqtad lattices.

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