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

Degrande, Céline ; Frederix, Rikkert LU orcid ; Hirschi, Valentin ; Ubiali, Maria ; Wiesemann, Marius and Zaro, Marco (2017) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 772. p.87-92
Abstract

We present predictions for the total cross section for the production of a charged Higgs boson in the intermediate-mass range (mH±
∼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 pp→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... (More)

We present predictions for the total cross section for the production of a charged Higgs boson in the intermediate-mass range (mH±
∼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 pp→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±
 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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author
; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Charged Higgs, Complex mass scheme, Resonant diagrams, Top quark, Two-Higgs-doublet models
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
772
pages
6 pages
publisher
Elsevier
external identifiers
  • scopus:85020916938
ISSN
0370-2693
DOI
10.1016/j.physletb.2017.06.037
language
English
LU publication?
no
id
4d0f3a0c-8d90-4ee9-b919-609b9d5d6c01
date added to LUP
2019-05-28 15:47:42
date last changed
2022-04-02 18:03:55
@article{4d0f3a0c-8d90-4ee9-b919-609b9d5d6c01,
  abstract     = {{<p>We present predictions for the total cross section for the production of a charged Higgs boson in the intermediate-mass range (m<sub>H<sup>±</sup><br>
                            </sub>∼m<sub>t</sub>) 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<sup>±</sup>W<sup>∓</sup>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 m<sub>H<sup>±</sup><br>
                            </sub> range. The extension of our results to different realisations of the two-Higgs-doublet model or to the supersymmetric case is also discussed.</p>}},
  author       = {{Degrande, Céline and Frederix, Rikkert and Hirschi, Valentin and Ubiali, Maria and Wiesemann, Marius and Zaro, Marco}},
  issn         = {{0370-2693}},
  keywords     = {{Charged Higgs; Complex mass scheme; Resonant diagrams; Top quark; Two-Higgs-doublet models}},
  language     = {{eng}},
  month        = {{09}},
  pages        = {{87--92}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Accurate predictions for charged Higgs production : Closing the m<sub>H<sup>±</sup>
                        </sub>∼m<sub>t</sub> window}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2017.06.037}},
  doi          = {{10.1016/j.physletb.2017.06.037}},
  volume       = {{772}},
  year         = {{2017}},
}