https://doi.org/10.1051/epjconf/201817506025
Perturbative Renormalization of Wilson line operators
1
Department of Physics, Temple University, Philadelphia, PA 19122 - 1801, USA
2
Department of Physics, University of Cyprus, POB 20537, 1678 Nicosia, Cyprus
* Speaker, e-mail: haris@ucy.ac.cy
Published online: 26 March 2018
We present results for the renormalization of gauge invariant nonlocal fermion operators which contain a Wilson line, to one loop level in lattice perturbation theory. Our calculations have been performed for Wilson/clover fermions and a wide class of Symanzik improved gluon actions. The extended nature of such ‘long-link’ operators results in a nontrivial renormalization, including contributions which diverge linearly as well as logarithmically with the lattice spacing, along with additional finite factors. We present nonperturbative prescriptions to extract the linearly divergent contributions.
© The Authors, published by EDP Sciences, 2018
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