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Perturbative Renormalization of Wilson line operators
Constantinou, M Panagopoulos, H
Constantinou, M
Panagopoulos, H
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Conference Proceeding
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2018-03-26
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10.1051/epjconf/201817506025
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© The Authors, published by EDP Sciences, 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.
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