Higgs pair production at the LHC with NLO and parton-shower effects

By R. Frederix, Stefano Frixione, Valentin Hirschi, Fabio Maltoni, Olivier Mattelaer, P. Torrielli, E. Vryonidou, M. Zaro. 2014

257 citations recorded by the source corpus.

We present predictions for the SM-Higgs-pair production channels of relevance at the LHC: gluon–gluon fusion, VBF, and top-pair, W, Z and single-top associated production. All these results are at the NLO accuracy in QCD, and matched to parton showers by means of the MC@NLO method; hence, they are fully differential. With the exception of the gluon–gluon fusion process, for which a special treatment is needed in order to improve upon the infinite-top-mass limit, our predictions are obtained in a fully automatic way within the publicly available MadGraph5_aMC@NLO framework. We show that for all channels in general, and for gluon–gluon fusion and top-pair associated production in particular, NLO corrections reduce the theoretical uncertainties, and are needed in order to arrive at reliable predictions for total rates as well as for distributions.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/38daeabbd8e6af3d891010e2c516bc6dfe847310

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Citations in the corpus

Effective field theory analysis of double Higgs boson production via gluon fusion (2015, methodology): “[29], where real emission diagrams were computed at 1-loop, while the finite part of the 2-loop virtual corrections was extracted by resorting to the infinite top mass approximation.”
Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production (2014, unknown): “This defines a correction factor [94–96]”
Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO (2014, methodology): “As already mentioned, our method has been already used in the NLO calculation of Higgs pair production within the SM in [50] and more recently in the 2HDM in [19].”
Higgs Boson studies at future particle colliders (2019, background): “poses a maximum deviation of the Higgs cubic self-interaction, relative to the SM value, of the order of [27,73] jk 3j˘<Min(600x;4p); (27) 32/75 Figure 10. Double Higgs production at hadron (left) [65] and lepton (right) [66] colliders as a function of the modiﬁed Higgs cubic self-coupling. See T”
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations (2014, methodology): “[127] we have only presented (N)LO+PS distributions.”