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

A bstract 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 phe...

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Bibliographic Details
Published in:The journal of high energy physics 2016-09, Vol.2016 (9), p.1-18, Article 151
Main Authors: de Florian, Daniel, Grazzini, Massimiliano, Hanga, Catalin, Kallweit, Stefan, Lindert, Jonas M., Maierhöfer, Philipp, Mazzitelli, Javier, Rathlev, Dirk
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Collisions
Elementary Particles
Hadrons
Higgs bosons
High energy physics
Mathematical models
Perturbation theory
Physics
Physics and Astronomy
Quantum chromodynamics
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Texts
Uncertainty
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Summary:A bstract 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%.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP09(2016)151