Renormalization of parton quasi-distributions beyond the leading order: spacelike vs. timelike
arXiv:2004.01043 · doi:10.1007/JHEP07(2020)161
Abstract
We argue that the renormalization factors for nonlocal quark-antiquark and gluon operators at space-like and time-like separations connected by a Wilson line coincide to all orders in perturbation theory. We calculate the anomalous dimensions and renormalization constants of quark-antiquark and gluon operators to three- and two-loop accuracy, respectively, and also compute vacuum expectation values of these operators to three-loop accuracy.
28 pages, 1 figure