Differential Higgs boson pair production at next-to-next-to-leading order in QCD

de Florian, Daniel, Grazzini, Massimiliano, Hanga, Catalin, Kallweit, Stefan, Lindert, Jonas M, Maierhöfer, Philipp, Mazzitelli, Javier and Rathlev, Dirk (2016) Differential Higgs boson pair production at next-to-next-to-leading order in QCD. Journal of High Energy Physics, 2016. a151 1-18. ISSN 1126-6708

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Abstract

We report on the first fully differential calculation for double Higgs boson production through gluon fusion in hadron collisions up to next-to-next-to-leading order (NNLO) in QCD perturbation theory. The calculation is performed in the heavy-top limit of the Standard Model, and in the phenomenological results we focus on pp collisions at s=14 TeV. We present differential distributions through NNLO for various observables including the transverse-momentum and rapidity distributions of the two Higgs bosons. NNLO corrections are at the level of 10%-25% with respect to the next-to-leading order (NLO) prediction with a residual scale uncertainty of 5%-15% and an overall mild phase-space dependence. Only at NNLO the perturbative expansion starts to converge yielding overlapping scale uncertainty bands between NNLO and NLO in most of the phase-space. The calculation includes NLO predictions for pp → HH + jet + X. Corrections to the corresponding distributions exceed 50% with a residual scale dependence of 20%-30%.

Item Type: Article
Keywords: NLO Computations, QCD Phenomenology
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 25 Oct 2022 11:49
Last Modified: 25 Oct 2022 12:00
URI: http://sro.sussex.ac.uk/id/eprint/108663

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