Analysis computes two-loop renormalisation constants for quark and gluon fields, indicating effects on strong coupling constant behavior.
A bstract We compute the contributions of CP-conserving dimension-six SMEFT operators to the two-loop renormalisation constants of quark and gluon fields in the on-shell scheme. Specifically, we consider the top-quark chromomagnetic operator and the triple gluon operator. We also compute the contribution of four-quark operators to the gluon renormalisation constant and discuss the implications for the running of the strong coupling constant.
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Duhr et al. (2025) studied this question.
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