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arXiv · 2507.01137

Constraining four-heavy-quark operators with top-quark, Higgs, and electroweak precision data

Stefano Di Noi·Hesham El Faham·Ramona Gröber·Marco Vitti·Eleni Vryonidou
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Abstract

We establish constraints on the dimension-six four-heavy-quark operators in the Standard Model Effective Field Theory (SMEFT) by synthesising LHC measurements of top-quark and single-Higgs production with electroweak precision observables. We scrutinise the choice of the $\gamma_5$ scheme in single-Higgs calculations, demonstrating its non-negligible impact on SMEFT fits.

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Stefano Di Noi, Hesham El Faham, Ramona Gröber, Marco Vitti, Eleni Vryonidou. 2025-07-01. Constraining four-heavy-quark operators with top-quark, Higgs, and electroweak precision data. https://arxiv.org/abs/2507.01137

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