When Two Loops Matter: Electroweak Precision in the SMEFT
High Energy Physics - Phenomenology
2026-05-01 v1 High Energy Physics - Experiment
Abstract
We identify a novel next-to-leading order renormalization effect in the dimension-six SMEFT with direct phenomenological impact. The Higgs-Yukawa operator that modifies the top-Higgs coupling induces a shift in the mass at two-loop order through a large anomalous dimension, rendering electroweak precision observables a powerful indirect probe of . We show that this effect is essential for the consistent interpretation of data from future Tera- and Giga- factories such as FCC-ee. The effect is realized in a simple renormalizable two-Higgs doublet model.
Cite
@article{arxiv.2604.26817,
title = {When Two Loops Matter: Electroweak Precision in the SMEFT},
author = {Lukas Born and Admir Greljo and Anders Eller Thomsen},
journal= {arXiv preprint arXiv:2604.26817},
year = {2026}
}
Comments
12 pages, 4 figures, 1 table