arXiv:1411.6990·v1·High Energy Physics — Lattice
Renormalization of Flavor Singlet and Nonsinglet Fermion Bilinear Operators
M. Constantinou (1)🇨🇾 · M. Hadjiantonis (1 and 2)🇨🇾 · H. Panagopoulos (1) ((1) Department of Physics, University of Cyprus, (2) Present address: Department of Physics, University of Michigan)🇨🇾
Abstract
We compute the difference in the renormalization of flavor singlet and nonsinglet fermion bilinear operators, to two loops in perturbation theory. Our results are applicable to a rather wide class of lattice actions with Symanzik improved gluons, stout links and clover fermions, including the Twisted Mass and SLiNC actions. A more detailed presentation of our results, along with relevant references, will appear in a forthcoming publication.
Comments: Talk presented at the 32nd International Symposium on Lattice Field Theory, 23-28 June, 2014, Columbia University. 7 pages, 3 figures, 2 tables