Renormalization of the axial current operator in dimensional regularization at four-loop in QCD
High Energy Physics - Phenomenology
2022-02-04 v2 High Energy Physics - Theory
Abstract
We provide the renormalization constants of the axial current operators, both singlet and non-singlet, in dimensional regularization up to four-loop order in QCD, determined using the off-shell Ward-Takahashi identity for an axial current with a non-anticommuting . A possible application of the result for the singlet axial current operator is the extraction of the non-decoupling mass logarithms in the axial quark form factors.
Keywords
Cite
@article{arxiv.2112.03795,
title = {Renormalization of the axial current operator in dimensional regularization at four-loop in QCD},
author = {Long Chen and Michał Czakon},
journal= {arXiv preprint arXiv:2112.03795},
year = {2022}
}
Comments
matched with the published version in JHEP