Accurate predictions for charged Higgs production: Closing the mH±∼mtmH±∼mt window

Abstract : We present predictions for the total cross section for the production of a charged Higgs boson in the intermediate-mass range (mH±∼mtmH±∼mt) at the LHC, focusing on a type-II two-Higgs-doublet model. Results are obtained at next-to-leading order (NLO) accuracy in QCD perturbation theory, by studying the full process View the MathML sourcepp→H±W∓bb¯ in the complex-(top)-mass scheme with massive bottom quarks. Compared to lowest-order predictions, NLO corrections have a sizeable impact: they increase the cross section by roughly 50% and reduce uncertainties due to scale variations by more than a factor of two. Our computation reliably interpolates between the low- and high-mass regime. Our results provide the first NLO prediction for charged Higgs production in the intermediate-mass range and therefore allow to have NLO accurate predictions in the full mH±mH± range. The extension of our results to different realisations of the two-Higgs-doublet model or to the supersymmetric case is also discussed.
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Physics Letters B, Elsevier, 2017, 〈10.1016/j.physletb.2017.06.037〉
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Soumis le : mardi 20 juin 2017 - 11:17:04
Dernière modification le : jeudi 11 janvier 2018 - 06:25:44

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Céline Degrande, Rikkert Frederix, Valentin Hirschi, Maria Ubiali, Marius Wiesemann, et al.. Accurate predictions for charged Higgs production: Closing the mH±∼mtmH±∼mt window. Physics Letters B, Elsevier, 2017, 〈10.1016/j.physletb.2017.06.037〉. 〈hal-01542886〉



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