https://doi.org/10.1140/epjc/s10052-024-13071-3
Regular Article - Theoretical Physics
All-order Feynman rules for leading-twist gauge-invariant operators in QCD
HUN-REN Wigner Research Centre for Physics, Konkoly-Thege Miklós u. 29-33, 1121, Budapest, Hungary
b
sam.van.thurenhout@wigner.hun-ren.hu
Received:
25
March
2024
Accepted:
29
June
2024
Published online:
26
July
2024
We present the Feynman rules for leading-twist gauge-invariant quark and gluon operators with an arbitrary number of total derivatives and applicable to any order in perturbation theory. This generalizes previous results and constitutes a necessary ingredient in the computation of the matrix elements of the corresponding operators. The results are written in a form appropriate for implementation in a computer algebra system. To illustrate the latter we provide implementations in Mathematica and FORM, which are made available at https://github.com/vtsam/NKLO.
© The Author(s) 2024
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