Renormalization of the flavorsinglet axialvector current and its anomaly in QCD
Abstract
The renormalization constant $Z_J$ of the flavorsinglet axialvector current with a nonanticommuting $\gamma_5$ in dimensional regularization is determined to order $\alpha_s^3$ in QCD with massless quarks. In addition, the equality between the $\overline{\mathrm{MS}}$ renormalization constant $Z_{F\tilde{F}}$ associated with the operator $\big[F \tilde{F} \big]_{R}$ and that of $\alpha_s$ is verified explicitly to hold true at 4loop order.
 Publication:

arXiv eprints
 Pub Date:
 September 2021
 arXiv:
 arXiv:2109.12304
 Bibcode:
 2021arXiv210912304C
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 Contribution to the Proceedings of the 15th International Symposium on Radiative Corrections (RADCOR) and the XIX Workshop on Radiative Corrections for the LHC and Future Colliders (LoopFest), 2021