Renormalization of the pseudoscalar operator at four loops in QCD

Autor: Long Chen, Michał Czakon, Marco Niggetiedt
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of High Energy Physics, Vol 2024, Iss 12, Pp 1-11 (2024)
Druh dokumentu: article
ISSN: 1029-8479
DOI: 10.1007/JHEP12(2024)045
Popis: Abstract We present the renormalization constant of the pseudoscalar operator defined with a non-anticommuting γ 5 in dimensional regularization up to four-loop order in perturbative Quantum Chromodynamics (QCD). Furthermore, by virtue of renormalization-group invariance of the relation between the scalar and the pseudoscalar operator, we predict the MS ¯ $$ \overline{\textrm{MS}} $$ factor of the renormalization constant for the latter at five-loop order in QCD.
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