The forgotten channels: charged Higgs boson decays to a W± and a non-SM-like Higgs boson

Bahl, Henning; Stefaniak, Tim; Wittbrodt, Jonas

doi:10.1007/jhep06(2021)183

Cited by 33 publications

(21 citation statements)

References 177 publications

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“…If it is off-shell, the charged lepton emerging from it might be soft (as already remarked upon), like in BP4-BP10. • For these BPs, the main production process of a charged Higgs boson is pp → H ± h, which cross section can be up to one order of magnitude larger than those of pp → H ± A and pp → H ± H ∓ , which are alternative discovery modes in this region of 2HDM Type-I parameter space [25][26][27]. Therefore, in the present analysis, we will focus on the W ± + 4γ signature stemming from the pp → H ± h production process only.…”

Section: Parameter Space Scansmentioning

confidence: 99%

Analysis of W± + 4γ in the 2HDM Type-I at the LHC

Wang

Arhrib

Benbrik³

et al. 2021

J. High Energ. Phys.

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We analyse a light charged Higgs boson in the 2-Higgs Doublet Model (2HDM) Type-I, when its mass satisfies the condition MH±< Mt + Mb and the parameter space is consistent with theoretical requirements of self-consistency as well as the latest experimental constraints from Large Hadron Collider (LHC) and other data. Over such a parameter space, wherein the Standard Model (SM)-like state discovered at the LHC in 2012 is the heaviest CP-even state of the 2HDM, it is found that the decay modes of the charged Higgs boson are dominated by H±→ W±(∗)h. Furthermore, the light neutral Higgs boson h dominantly decays into two photons. Under these conditions, we find that the production and decay process pp → H±h → W±(∗)hh → ℓνℓ + 4γ (ℓ = e, μ) is essentially background free. However, since the W±(∗) could be largely off-shell and the h state is very light, so that both the lepton coming from the former and the photons coming from the latter could be rather soft, we perform here a full Monte Carlo (MC) analysis at the detector level demonstrating that such a W± + 4γ signal is very promising, as it would be yielding significant excesses at the LHC with an integrated luminosity of L = 300 fb−1 at both $$ \sqrt{s} $$ s = 13 and 14 TeV.

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Section: Parameter Space Scansmentioning

confidence: 99%

Analysis of W± + 4γ in the 2HDM Type-I at the LHC

Wang

Arhrib

Benbrik³

et al. 2021

J. High Energ. Phys.

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“…As discussed in the beginning of the section, the charged Higgs will be produced via Drell-Yan process: pp → W ± * → H ± H/A and and the subsequent bosonic decay of the Higgses yield a same sign trilepton signal (3 ± + E T ) in association with additional jets and/or leptons. We applied uniform K-factor of 1.35 [36] for the signal cross-section. For event generation, the type-I 2HDM model is implemented in FeynRules-2.3 [62] and both the signal and the background events are generated using MadGraph5-aMC@NLO-2.6.6 [63,64].…”

Section: Event Generation and Signal Selectionmentioning

confidence: 99%

“…For type-I or fermiophobic case, the H ± tb coupling is tan β suppressed, and for large tan β, the channel becomes irrelevant. On the other hand, the electroweak production of H ± [32][33][34][35][36] in association with a neutral (pseudo)scalar depends on the gauge coupling and dominates over the top associated production at large tan β. For type-I 2HDM, the electroweak production of a light charged Higgs can give rise to multi-photon or multi-boson final state [37][38][39][40][41][42][43].…”

mentioning

confidence: 99%

Same sign trilepton as signature of charged Higgs in two Higgs doublet model

Mondal,

Sanyal

2021

Preprint

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We explored the prospect of looking for a fermiophobic charged Higgs via the same sign trilepton signal at the LHC. Such a fermiophobic scenario appears in type-I two Higgs doublet model where the fermionic couplings of the charged Higgs are inversely proportional to tan β. Almost all the experimental searches rely on the fermionic production and decay of the charged Higgs, and the limit on charge Higgs is non-existent unless tan β is small. We show that for a fermiophobic case, the electroweak production is dominant for most of the parameter space, and the subsequent bosonic decay of the charged and neutral Higgs will give rise to the same sign trilepton signal. By doing a thorough phenomenological analysis, we show that the same sign trilepton can be an excellent complementary search and can explore the large tan β regions.

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“…2 Some unconventional decay channels of the heavy H ± in the 2HDM have also been studied, such as H ± → W ± A [32], H ± → W ± γ [33], and H ± → t b [34][35][36]. 3 In Ref.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model

Cheung,

Jueid,

Kim

et al. 2022

Preprint

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In the type-I two-Higgs-doublet model, existing theoretical and experimental constraints still permit the light charged Higgs boson with a mass below the top quark mass. We present a complete roadmap for the light charged Higgs boson at the LHC through the comprehensive phenomenology study. In type-I, it is challenging to simultaneously accommodate the light mass of the charged Higgs boson and the constraints from theory, electroweak precision data, Higgs data, b → sγ, and direct search bounds. Consequently, the extremely curtailed parameter space predicts quite definite phenomenological implications. We point out that the mass of the pseudoscalar Higgs boson, M A , is the most crucial factor. If M A is light, the charged Higgs boson decays mainly into AW ± . When M A is above the AW ± threshold, on the other hand, the dominant decay mode is into τ ± ν. Over the whole viable parameter space, we study all the possible production and decay modes of charged Higgs bosons at the LHC, and suggest three efficient channels:on the sophisticated signal-background analyses including detector simulation, we showed that the significance of the first final state is large, that of the second one is marginal around three, but the third one suffers from huge t t related backgrounds.

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The forgotten channels: charged Higgs boson decays to a W± and a non-SM-like Higgs boson

Cited by 33 publications

References 177 publications

Analysis of W± + 4γ in the 2HDM Type-I at the LHC

Analysis of W± + 4γ in the 2HDM Type-I at the LHC

Same sign trilepton as signature of charged Higgs in two Higgs doublet model

Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model

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