Non-perturbative renormalization for general improved staggered bilinears

Understand

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.