Production of 
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 and 
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 in 2HDM: Prospects for discovery at the LHC

Hou, W.-S.; Modak, Tanmoy

doi:10.1103/physrevd.101.035007

Cited by 18 publications

(20 citation statements)

References 71 publications

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“…Here we outline the framework of the g2HDM following the notation of Refs. [32,33]. In the Higgs basis, the most general two Higgs doublet potential can be written as [33], see e.g., [34] V (Φ, Φ ) = μ 2 11…”

Section: Model Frameworkmentioning

confidence: 99%

“…Therefore in our analysis we take v, m h , and γ , m A , m H , m H ± , μ 22 , η 2 , η 7 as the nine phenomenological parameters. The scalars h, H , A and H ± couple to fermions by [33,34]…”

Section: Model Frameworkmentioning

confidence: 99%

“…For more details on the convention and parameter counting we redirect readers to Refs. [33,42]. One has to also consider oblique T parameter [43] constraint, which restricts the hierarchical structures of the scalar masses [44,45], and therefore η i s. We utilize the expression given in Ref.…”

Section: Scanning and Parameter Spacementioning

confidence: 99%

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Echoes of 2HDM inflation at the collider experiments

Modak

Oda

2020

Eur. Phys. J. C

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We study the correlation between the constraints on general two Higgs doublet model from Higgs inflation and from collider experiments. The parameter space receives meaningful constraints from direct searches at the large hadron collider and from flavor physics if $$m_H$$ m H , $$m_A$$ m A , and $$m_{H^\pm }$$ m H ± are in the sub-TeV range, where H, A, and $$H^\pm $$ H ± are the CP even, CP odd, and charged Higgs bosons, respectively. We find that in the parameter region favored by the Higgs inflation, H, A, and $$H^\pm $$ H ± are nearly degenerate in mass. We show that such near degeneracy can be probed directly in the upcoming runs of the Large Hadron Collider, while the future lepton colliders such as the International Linear Collider and the future circular collider would provide complementary probes.

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Section: Model Frameworkmentioning

confidence: 99%

Section: Model Frameworkmentioning

confidence: 99%

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Echoes of 2HDM inflation at the collider experiments

Modak

Oda

2020

Eur. Phys. J. C

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“…Besides minimal realizations of the 2HDM that we focused on in this paper, the exotic decay channel A/H → HZ/AZ channel has also been proven to be a useful probe for CPV realizations [86] and singlet extension [87][88][89][90] of the 2HDM. Additionally, other exotic decay modes besides A/H → HZ/AZ, such as H ± → AW, HW , A/H → H ± W ∓ , could also extend the reach beyond the direct search via conventional decay channels, and indirect reach via Higgs precision measurements, especially at 100 TeV pp colliders [82].…”

Section: Jhep06(2020)163mentioning

confidence: 99%

2HDM neutral scalars under the LHC

Kling

2020

J. High Energ. Phys.

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Two Higgs Doublet Models (2HDM) provide a simple framework for new physics models with an extended Higgs sector. The current LHC results, including both direct searches for additional non-Standard Model (SM) Higgs bosons, as well as precision measurements of the SM-like Higgs couplings, already provide strong constraints on the 2HDM parameter spaces. In this paper, we examine those constraints for the neutral scalars in the Type-I and Type-II 2HDM. In addition to the direct search channels with SM final states: H/A → ff , V V, V h, hh, we study in particular the exotic decay channels of H/A → AZ/HZ once there is a mass hierarchy between the non-SM Higgses. We found that H/A → AZ/HZ channel has unique sensitivity to the alignment limit region which remains unconstrained by conventional searches and Higgs precision measurements. This mode also extends the reach at intermediate t β for heavy m A that are not covered by the other direct searches.

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“…Instead, we treat the scalar boson masses as parameters but state that we have checked that they satisfy the usual requirements of perturbativity, positivity, and unitarity, as well as other constraints such as electroweak oblique parameters (see, e.g., Refs. [15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

Constraining the t→u flavor changing neutral Higgs coupling at the LHC

2020

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We study the constraints on t → u flavor changing neutral Higgs coupling and how it may be explored further at the LHC. In the general two Higgs doublet model, such transitions can be induced by a nonzero ρ tu Yukawa coupling. We show that such couplings can be constrained by existing searches at the LHC for m H , m A , and m H þ in the sub-TeV range, where H, A, and H þ are the exotic CP-even, CP-odd, and charged scalars. We find that a dedicated ug → tH=tA → ttū search can probe the available parameter space of ρ tu down to a few percent level for 200 GeV ≲ m H , m A ≲ 600 GeV, with discovery possible at high luminosity. Effects of how other extra top Yukawa couplings, such as ρ tc and ρ tt , dilute the sensitivity of the ρ tu probe are discussed.

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Production of tZH and tZh in 2HDM: Prospects for discovery at the LHC

Cited by 18 publications

References 71 publications

Echoes of 2HDM inflation at the collider experiments

Echoes of 2HDM inflation at the collider experiments

2HDM neutral scalars under the LHC

Constraining the t→u flavor changing neutral Higgs coupling at the LHC

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