Renormalization factors relate the observables obtained on the lattice to their measured counterparts in the continuum in a suitable renormalization scheme. They have to be computed very precisely which requires a careful treatment of lattice artifacts. In this work we present a method to suppress these artifacts by subtracting one-loop contributions proportional to the square of the lattice spacing calculated in lattice perturbation theory.
@article{arxiv.1310.6504,
title = {Perturbatively improving renormalization constants},
author = {M. Constantinou and M. Costa and M. Gockeler and R. Horsley and H. Panagopoulos and H. Perlt and P. E. L. Rakow and G. Schierholz and A. Schiller},
journal= {arXiv preprint arXiv:1310.6504},
year = {2013}
}