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arXiv · 2508.04500

Two-loop renormalisation of quark and gluon fields in the SMEFT in the on-shell scheme

Claude Duhr·Giuseppe Ventura·Eleni Vryonidou
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Abstract

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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Claude Duhr, Giuseppe Ventura, Eleni Vryonidou. 2025-08-06. Two-loop renormalisation of quark and gluon fields in the SMEFT in the on-shell scheme. https://arxiv.org/abs/2508.04500

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