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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… Click to show full 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 γ 5 . 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:
current operator;
four loop;
axial current;
regularization four;
dimensional regularization
Journal Title: Journal of High Energy Physics
Year Published: 2022
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Journal Title: Journal of High Energy Physics
Year Published: 2022
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!