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arXiv · 2212.02769

Exploring SMEFT operators through single top-quark production associated with the Higgs boson at the LHC

Monoranjan Guchait·Arnab Roy
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Abstract

The Standard Model effective field theory (SMEFT) provides a general framework to include the dynamics of the beyond standard model physics residing at a certain higher energy scale $Λ$. We study the top-quark production along with a Higgs boson and a jet (tHq) at the LHC experiment within the framework of the SMEFT. First, identifying the relevant sensitive dimension-6 SMEFT operators, a strategy is developed to constrain the Wilson Coefficients (WC) corresponding to these associated SMEFT operators using the latest LHC measurements, providing a complementary way to the global-fit approach. The best-fit values of these WCs are presented. Finally, we discuss the discovery potential of the signatures of those operators. We find that a discoverable excess due to SMEFT effects can be observed in the tHq process at the LHC with the center of mass energy $\sqrt{s}=13$ TeV and integrated luminosity options ${\cal L}=$300 $\rm fb^{-1}$ and 3000 $\rm fb^{-1}$.

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Monoranjan Guchait, Arnab Roy. 2022-12-06. Exploring SMEFT operators through single top-quark production associated with the Higgs boson at the LHC. https://arxiv.org/abs/2212.02769

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