Journal of High Energy Physics (Jul 2020)

Renormalization of parton quasi-distributions beyond the leading order: spacelike vs. timelike

  • V. M. Braun,
  • K. G. Chetyrkin,
  • B. A. Kniehl

DOI
https://doi.org/10.1007/JHEP07(2020)161
Journal volume & issue
Vol. 2020, no. 7
pp. 1 – 24

Abstract

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Abstract 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.

Keywords