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arXiv · 2201.01797

The $\bar{\mathrm{MS}}$ renormalization constant of the singlet axial current operator at $\mathcal{O}(α_s^5)$ in QCD

Long Chen·Michał Czakon
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Abstract

We provide the $\bar{\mathrm{MS}}$ factor of the renormalization constant of the singlet axial-current operator in dimensional regularization at $\mathcal{O}(α_s^5)$ in perturbative Quantum Chromodynamics (QCD). The result is obtained from a formula derived using the Adler-Bell-Jackiw equation in terms of renormalized operators. The required input consists of the complete four-loop results for operator renormalization constants obtained by explicit diagrammatic computation in a previous publication.

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Long Chen, Michał Czakon. 2022-08-19. The $\bar{\mathrm{MS}}$ renormalization constant of the singlet axial current operator at $\mathcal{O}(α_s^5)$ in QCD. https://doi.org/10.1016/j.physletb.2022.137266

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