Beyond dimension six in SM Effective Field Theory: a case study in Higgs pair production at NLO QCD
G. Heinrich*, J. Lang and L. Scyboz
October 20, 2022
We present the NLO (two-loop) QCD corrections to Higgs boson pair production in gluon fusion within Standard Model Effective Theory (SMEFT), including also squared dimension-6 operators and double insertions of operators. The different options to truncate the EFT expansion are contrasted to a non-linear EFT approach (HEFT) and their effects are illustrated by several phenomenological examples.
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