All-order Feynman rules for leading-twist gauge-invariant operators in QCD
High Energy Physics - Phenomenology
2024-08-05 v2 High Energy Physics - Theory
Abstract
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.
Keywords
Cite
@article{arxiv.2403.12623,
title = {All-order Feynman rules for leading-twist gauge-invariant operators in QCD},
author = {G. Somogyi and S. Van Thurenhout},
journal= {arXiv preprint arXiv:2403.12623},
year = {2024}
}
Comments
22 pages, LaTex, 9 figures, v2: major revision: conventions for quark operator rules changed and Feynman rules for gluon operators were added