Abstract
We present the calculation of the contribtuions from the chromomagnetic and four-top-quark-operators within Standard Model Effective Field Theory (SMEFT) to Higgs boson pair production in gluon fusion, combined with QCD corrections that are at NLO with full mt-dependence for the leading operators. We study the effects of these operators on the total cross section and the invariant mass distribution of the Higgs-boson pair, at \(\sqrt{s}\) = 13.6 TeV. These subleading operators are implemented in the generator ggHH_SMEFT, in the same Powheg-Box-V2 framework as the leading operators, such that their effects can be easily studied in a unified setup.
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Acknowledgments
We would like to thank Stephen Jones, Matthias Kerner and Ludovic Scyboz for collaboration related to the ggHH@NLO project and Gerhard Buchalla, Stefano Di Noi, Ramona Gröber, Christoph Müller-Salditt, Michael Trott and Marco Vitti for useful discussions. This research was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under grant 396021762 - TRR 257.
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Heinrich, G., Lang, J. Combining chromomagnetic and four-fermion operators with leading SMEFT operators for gg → hh at NLO QCD. J. High Energ. Phys. 2024, 121 (2024). https://doi.org/10.1007/JHEP05(2024)121
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DOI: https://doi.org/10.1007/JHEP05(2024)121