Theoretical constraints on additional Higgs bosons in light of the 126 GeV Higgs

Grinstein, Benjamı́n; Murphy, Christopher W.; Pirtskhalava, David; Uttayarat, Patipan

doi:10.1007/jhep05(2014)083

Cited by 32 publications

(32 citation statements)

References 57 publications

(91 reference statements)

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“…The authors of [1,4] examined the production and decays of the observed Higgs for the septet, while [5] explored how the electroweak quantum numbers of an additional scalar field, such as the septet, could be determined through a measurement of the Higgs-Higgs-vector-vector coupling. The sum rules for general scalar representations of SU(2) L × U(1) Y were studied in [6] using perturbative unitarity, including the septet model as a specific example.…”

Section: Jhep05(2014)150mentioning

confidence: 99%

Surveying the scope of the SU(2) L scalar septet sector

Alvarado

Lehman

Ostdiek

2014

J. High Energ. Phys.

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Extending the Standard Model by adding a scalar field transforming as a septet under SU(2) L preserves the ρ parameter at tree level and can satisfy experimental constraints on the electroweak parameters S and T . This work presents the first fully general phenomenological study of such an extension. We examine constraints on the septet model couplings based on electroweak and Higgs observables, and use LHC searches for new physics to bound the mass of the septet to be above ∼ 400 GeV at a 95% CL.

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Section: Jhep05(2014)150mentioning

confidence: 99%

Surveying the scope of the SU(2) L scalar septet sector

Alvarado

Lehman

Ostdiek

2014

J. High Energ. Phys.

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“…• Perturbative unitarity [15,[32][33][34][35][36] The two-to-two scattering matrix for this model in the neutral, color singlet channel is 18 × 18 and in Ref. [18] we diagonalize it numerically and illustrate the resulting constraints.…”

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confidence: 99%

Validity of two Higgs doublet models with a scalar color octet up to a high energy scale

Cheng

Valencia

2017

Phys. Rev. D

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We have recently studied theoretical constraints on the parameters of a 2HDM augmented with a color-octet scalar. In this paper we consider the consequences of requiring the model to remain valid up to very high energy scales, such as the GUT scale. The acceptable region of parameter space is reduced when one insists on vacuum stability, perturbative unitarity and the absence of Landau poles below a given scale. As the scale to which we require the model to be valid is increased, the acceptable region of parameter space for the 2HDM sector is reduced in such a way that it approaches the alignment limit, cos(β − α) → 0, and the masses of H 0 , A and H ± are pushed closer to each other. The parameters of the color octet sector are also restricted to an increasingly smaller region.

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“…This limit is particularly strong for a Z 2 symmetric model [33,39,40]. The dominant one-loop corrections to the perturbative unitarity constraints for the model with softly broken Z 2 symmetry are also available [41].…”

Section: Theoretical Constraintsmentioning

confidence: 99%

Prospects for charged Higgs searches at the LHC

et al. 2017

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The goal of this report is to summarize the current situation and discuss possible search strategies for charged scalars, in non-supersymmetric extensions of the Standard Model at the LHC. Such scalars appear in Multi-HiggsDoublet models, in particular in the popular Two-HiggsDoublet model, allowing for charged and additional neutral Higgs bosons. These models have the attractive property that electroweak precision observables are automatically in agreement with the Standard Model at the tree level. For the most popular version of this framework, Model II, a discovery of a charged Higgs boson remains challenging, since the parameter space is becoming very constrained, and the QCD background is very high. We also briefly comment on models with dark matter which constrain the corresponding charged a e-mail: Maria.Krawczyk@fuw.edu.pl b e-mail: Per.Osland@uib.no scalars that occur in these models. The stakes of a possible discovery of an extended scalar sector are very high, and these searches should be pursued in all conceivable channels, at the LHC and at future colliders.

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Theoretical constraints on additional Higgs bosons in light of the 126 GeV Higgs

Cited by 32 publications

References 57 publications

Surveying the scope of the SU(2) L scalar septet sector

Surveying the scope of the SU(2) L scalar septet sector

Validity of two Higgs doublet models with a scalar color octet up to a high energy scale

Prospects for charged Higgs searches at the LHC

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