NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers

• Main Authors: Heinrich, G, Jones, S. P, Kerner, M, Luisoni, G, Vryonidou, E
• Format: Journal Article
• Language: English
• Published: 04-12-2017
• Subjects: Physics - High Energy Physics - Phenomenology
• DOI: 10.48550/arxiv.1703.09252

JHEP 1708 (2017) 088 We present the first combination of NLO QCD matrix elements for di-Higgs
production, retaining the full top quark mass dependence, with a parton shower.
Results are provided within both the POWHEG-BOX and MadGraph5_aMC@NLO Monte
Carlo frameworks. We assess in detail the theoretical uncertainties and provide
differential results. We find that, as expected, the shower effects are
relatively large for observables like the transverse momentum of the Higgs
boson pair, which are sensitive to extra radiation. However, these shower
effects are still much smaller than the differences between the Born-improved
HEFT approximation and the full NLO calculation in the tails of the
distributions.