Journal of High Energy Physics (May 2024)

Combining chromomagnetic and four-fermion operators with leading SMEFT operators for gg → hh at NLO QCD

  • Gudrun Heinrich,
  • Jannis Lang

DOI
https://doi.org/10.1007/JHEP05(2024)121
Journal volume & issue
Vol. 2024, no. 5
pp. 1 – 32

Abstract

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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 m t -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.

Keywords