期刊
PHYSICS LETTERS B
卷 772, 期 -, 页码 87-92出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2017.06.037
关键词
Charged Higgs; Resonant diagrams; Complex mass scheme; Top quark; Two-Higgs-doublet models
资金
- Alexander von Humboldt Foundation
- Swiss National Science Foundation (SNF) [PBELP2 146525, 200020-141360]
- European Union's Horizon research and innovation programme under the Marie Sklodovska-Curie grant [660171]
- ILP LABEX [ANR-10-LABX-63]
- French state funds [ANR-11-IDEX-0004-02]
- Royal Society Dorothy Hodgkin Research Fellowship
- STFC grant [ST/L000385/1]
- Science and Technology Facilities Council [ST/L000385/1] Funding Source: researchfish
- STFC [ST/L000385/1] Funding Source: UKRI
We present predictions for the total cross section for the production of a charged Higgs boson in the intermediate-mass range (m(H)+/- similar to m(t)) 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 pp -> H +/- W -/+ b (b) over bar 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 m(H)+/- range. The extension of our results to different realisations of the two-Higgs-doublet model or to the supersymmetric case is also discussed. Crown Copyright (C) 2017 Published by Elsevier B. V.
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