Abstract
We study the production of Higgs boson pairs via gluon fusion at the LHC in the Two-Higgs-Doublet Model. We present predictions at NLO accuracy in QCD, matched to parton showers through the MC@NLO method. A dedicated reweighting technique is used to improve the NLO calculation upon the infinite top-mass limit. We perform our calculation within the MadGraph5 aMC@NLO framework, along with the 2HDM implementation based on the NLOCT package. The inclusion of the NLO corrections leads to large K-factors and significantly reduced theoretical uncertainties. We examine the seven 2HDM Higgs pair combinations using a number of representative 2HDM scenarios. We show how the model-specific features modify the Higgs pair total rates and distribution shapes, leading to trademark signatures of an extended Higgs sector.
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Hespel, B., López-Val, D. & Vryonidou, E. Higgs pair production via gluon fusion in the Two-Higgs-Doublet Model. J. High Energ. Phys. 2014, 124 (2014). https://doi.org/10.1007/JHEP09(2014)124
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DOI: https://doi.org/10.1007/JHEP09(2014)124