arXiv:1310.6504·v1·High Energy Physics — Lattice
Perturbatively improving renormalization constants
M. Constantinou🇨🇾 · M. Costa🇨🇾 · M. Gockeler🇩🇪 · R. Horsley🇬🇧 · H. Panagopoulos🇨🇾 · H. Perlt🇩🇪 · P. E. L. Rakow🇬🇧 · G. Schierholz🇩🇪 · A. Schiller🇩🇪
Abstract
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.
Comments: 7 pages, 2 figures, LATTICE 2013