Renormalization of parton quasi-distributions beyond the leading order: spacelike vs. timelike
V. M. Braun, K. G. Chetyrkin, B. A. Kniehl
Abstract
A bstract We argue that the renormalization factors for non-local 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.
Topics & Concepts
PhysicsRenormalizationPartonGluonMathematical physicsPerturbation theory (quantum mechanics)Particle physicsQuantum electrodynamicsRenormalization groupFunctional renormalization groupPerturbation (astronomy)Vacuum expectation valueVacuum stateTheoretical physicsQuantum mechanicsFeynman graphConstant (computer programming)Line (geometry)Gluon condensateParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research