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Parton distribution function for topological charge at one loop
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DOI：10.1007/JHEP02(2022)163.png)
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摘要
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We present results for the gg-part of the one-loop corrections to the recently introduced topological charge GPD (F) over tilde (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 delta(x) terms were found for the twist-4 gluon GPD (F) over tilde (x, q(2)).
Keyword:
Higher-Order Perturbative Calculations
Parton Distributions
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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