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

• DOI: 10.1016/j.physletb.2017.06.037
• Publication Date: 2017-06-17T11:00:13Z
• Authors: Céline Degrande; Rikkert Frederix; Valentin Hirschi; Maria Ubiali; Marius Wiesemann; Marco Zaro
• Keywords: [PHYS]Physics [physics]; Physics; QC1-999; Top quark; 530; 01 natural sciences; Resonant diagrams; Two-Higgs-doublet models; Charged Higgs; Complex mass scheme; Resonant diagrams; Top quark; Two-Higgs-doublet models; 0103 physical sciences; Complex mass scheme; Charged Higgs

We present predictions for the total cross section production of a charged Higgs boson in intermediate-mass range ($m_{H^{\pm}}\sim m_t$) at LHC, focusing on type-II two-Higgs-doublet model. Results are obtained next-to-leading order (NLO) accuracy QCD perturbation theory, by studying full process $pp\to H^\pm W^\mp b \bar b$ complex-(top)-mass scheme with massive bottom quarks. Compared to lowest-order predictions, NLO corrections have sizeable impact: they increase roughly 50\% and reduce uncertainties due scale variations more than factor two. Our computation reliably interpolates between low- high-mass regime. results provide first prediction therefore allow accurate $m_{H^{\pm}}$ range. The extension our different realisations model or supersymmetric case is also discussed.