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arXiv · 2212.03258

Double insertions of SMEFT operators in gluon fusion Higgs boson production

Konstantin Asteriadis·Sally Dawson·Duarte Fontes
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Abstract

Deviations from the Standard Model (SM) can be parameterized in terms of the SM effective field theory (SMEFT), which is typically truncated at dimension-6. Including higher dimension operators -- as well as considering simultaneous insertions of multiple dimension-6 operators -- may be necessary in some processes, in order to correctly capture the properties of the underlying UV theory. As a step towards clarifying this in the Higgs boson production in gluon fusion process, we study double insertions of dimension-6 operators in the 1-loop virtual amplitude. We present needed Feynman rules up to $\mathcal{O}(1/\Lambda^4)$ and we numerically study the impact of various approximations to the $\mathcal{O}(1/\Lambda^4)$ expansion.

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Konstantin Asteriadis, Sally Dawson, Duarte Fontes. 2022-12-06. Double insertions of SMEFT operators in gluon fusion Higgs boson production. https://doi.org/10.1103/physrevd.107.055038

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