Higgs boson pair production at NNLO in QCD including dimension 6 operators

Abstract

In this paper, we present the computation of the Higgs boson pair production cross section, both inclusive as well as differential on the invariant mass distribution, at next-to-next-to-leading order (NNLO) in QCD including effects of new physics beyond the standard model. We parametrize the effects of new physics with the relevant dimension 6 operators in a standard model effective field theory (EFT) approach and examine their phenomenology. The dependence of the NNLO $K$-factor on the EFT couplings is analysed, finding that, while rather flat for a number of EFT coefficients, it can considerably differ from the standard model value in some particular regions of the parameter space. We present explicit examples of (almost) degeneracy in the NNLO cross-section with respect to the anomalous couplings, showing that the invariant mass distribution has a much larger sensitivity to phenomena beyond the standard model and can be used as a tool to discriminate their effect.

19 pages, 4 figures; typos corrected, references added, appendix with additional formulae added

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• Probing the trilinear Higgs boson coupling in di-Higgs production at NLO QCD including parton shower effects
• Higgs-Pair Production via Gluon Fusion at Hadron Colliders: NLO QCD Corrections
• Benchmarking Di-Higgs Production in Various Extended Higgs Sector Models
• Determining the Shape of Higgs Potential at Future Colliders
• Revisiting the non-resonant Higgs pair production at the HL-LHC
• NLO corrections to $h\to b\bar{b}$ decay in SMEFT
• Exploring anomalous couplings in Higgs boson pair production through shape analysis
• SMEFT predictions for $gg\to hh$ at full NLO QCD and truncation uncertainties
• Triple Higgs production at hadron colliders at NNLO in QCD
• Combined analysis of double Higgs production via gluon fusion at the HL-LHC in the effective field theory approach
• Higgs decay to fermion pairs at NLO in SMEFT
• Loop counting matters in SMEFT
• Electroweak input schemes and universal corrections in SMEFT
• Combining chromomagnetic and four-fermion operators with leading SMEFT operators for $gg\to hh$ at NLO QCD
• Anomalous couplings in Higgs-boson pair production at approximate NNLO QCD
• Measuring Higgs Boson Self-couplings with $2\to 3$ VBS Processes
• Interference effects in resonant di-Higgs production at the LHC in the Higgs singlet extension
• Search for Higgs boson pair production in the $\mathrm{b}\overline{\mathrm{b}}$W${}^{+}$W${}^{-}$ decay mode in proton-proton collisions at $\sqrt{s}$ = 13 TeV