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Constraining four-heavy-quark operators with top-quark, Higgs, and electroweak precision data (2507.01137v1)
Published 1 Jul 2025 in hep-ph
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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