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arXiv · 2409.10303

Leading Twist-Two Gauge-Variant Counterterms

Thomas Gehrmann·Andreas von Manteuffel·Tong-Zhi Yang
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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.

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Thomas Gehrmann, Andreas von Manteuffel, Tong-Zhi Yang. 2024-09-16. Leading Twist-Two Gauge-Variant Counterterms. https://arxiv.org/abs/2409.10303

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