Leading Twist-Two Gauge-Variant Counterterms
High Energy Physics - Phenomenology
2024-09-17 v1 High Energy Physics - Theory
Abstract
Anomalous dimensions of twist-two operators govern the scale evolution of parton distribution functions. For off-shell external states, the physical twist-two operators mix with unknown gauge-variant operators under renormalization. In this talk, we apply the method proposed by us in~\cite{Gehrmann:2023ksf} to compute all gauge-variant one-loop counterterm Feynman rules with five legs, which enter the determination of the four-loop splitting functions in QCD.
Cite
@article{arxiv.2409.10303,
title = {Leading Twist-Two Gauge-Variant Counterterms},
author = {Thomas Gehrmann and Andreas von Manteuffel and Tong-Zhi Yang},
journal= {arXiv preprint arXiv:2409.10303},
year = {2024}
}
Comments
12 pages, 1 figure, contribution to LL2024, ancillary files with results