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DOE OSTI · 1853937

Parton distribution function for topological charge at one loop

Radyushkin, Anatoly·Zhao, Shuai
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Abstract

We present results for the gg-part of the one-loop corrections to the recently introduced “topological charge” GPD F~(x, q 2 ). In particular, we give expression for its evolution kernel. To enforce strict compliance with the gauge invariance requirements, we have used on-shell states for external gluons, and have obtained identical results both in Feynman and light-cone gauges. No “zero mode” δ(x) terms were found for the twist-4 gluon GPD F~(x, q 2 ).

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSHigher-Order Perturbative CalculationsParton Distributions

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Radyushkin, Anatoly, Zhao, Shuai. 2022-02-21. Parton distribution function for topological charge at one loop. https://doi.org/10.1007/jhep02(2022)163

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