Explaining the Higgs decays at the LHC with an extended electroweak model

Alves, Alexandre; Barreto, E. Ramirez; Dias, Alex G.; Pires, C. A. de S.; Queiroz, Farinaldo S.; Silva, P. S. Rodrigues da

doi:10.1140/epjc/s10052-013-2288-y

Cited by 47 publications

(22 citation statements)

References 53 publications

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“…This model is a compelling alternative to the SM with a smoking gun signature given by the presence of charged gauge bosons and scalars, as well as a spectrum of particles whose phenomenological aspects have been investigated extensively [23][24][25][26][27][28][29][30][31]. This model is also consistent with all electroweak bounds, while offering plausible explanations to many open problems in particle physics, such as dark matter [32][33][34] and the number of particle generations [35].…”

Section: Introductionmentioning

confidence: 92%

“…3-3-1 models potentially address important theoretical and phenomenological questions which remain unexplained within the SM, such as the number of particle families [35], certain dark matter signals [32,33], the possible Higgs to diphoton excess [23][24][25], electric charge quantization [44,45], etc. In addition, 3-3-1 models present a rich phenomenology which includes new scalars and gauge bosons, as extensively explored in the literature [26][27][28][29][30][31].…”

Section: The 3-3-1lhn Modelmentioning

confidence: 99%

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A 331 WIMPy dark radiation model

et al. 2014

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Recent observations suggest that the number of relativistic degrees of freedom in the early universe might exceed what is predicted in the standard cosmological model. If even a small, percent-level fraction of dark matter particles are produced relativistically, they could mimic the effect of an extra realistic species at matter-radiation equality while obeying BBN, CMB and Structure Formation bounds. We show that this scenario is quite naturally realized with a weakscale dark matter particle and a high-scale "mother" particle within a well-motivated 3-3-1 gauge model, which is particularly interesting for being consistent with electroweak precision measurements, with recent LHC results, and for offering a convincing explanation for the number of generations in the Standard Model.

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Section: Introductionmentioning

confidence: 92%

Section: The 3-3-1lhn Modelmentioning

confidence: 99%

A 331 WIMPy dark radiation model

et al. 2014

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“…See Refs. [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] for some of these.…”

Section: Fermionsmentioning

confidence: 99%

The muon anomalous magnetic moment in the reduced minimal 3-3-1 model

Kelso

Pinheiro²,

Queiroz

et al. 2014

Eur. Phys. J. C

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We study the muon anomalous magnetic moment (g − 2) μ in the context of the reduced minimal 3-3-1 model recently proposed in the literature. In particular, its spectrum contains a doubly charged scalar (H ±± ) and gauge boson (U ±± ), new singly charged vectors (V ± ) and a Z boson, each of which might give a sizeable contribution to the (g − 2) μ . We compute the 1-loop contributions from all these new particles to the (g − 2) μ . We conclude that the doubly charged vector boson provides the dominant contribution, and by comparing our results with the experimental constraints we derive an expected value for the scale of SU(3) L ⊗ U (1) N symmetry breaking v χ ∼ 2 TeV. We also note that, if the discrepancy in the anomalous moment is resolved in the future without this model then the constraints will tighten to requiring v χ 3.7 TeV with current precision, and they will entirely rule out the model if the expected precision is achieved by the future experiment at Fermilab.

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“…refs. [15][16][17][18][19][20][21][22][23][24][25][26][27]. In this paper we focus on the possibility that such new states are supersymmetric and study enhanced h → γγ rate in the MSSM.…”

Section: Jhep10(2013)088mentioning

confidence: 99%

Light staus and enhanced Higgs diphoton rate with non-universal gaugino masses and SO(10) Yukawa unification

Badziak

Olechowski

Pokorski

2013

J. High Energ. Phys.

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It is shown that substantially enhanced Higgs to diphoton rate induced by light staus with large left-right mixing in MSSM requires at the GUT scale non-universal gaugino masses with bino and/or wino lighter than gluino. The possibility of such enhancement is investigated in MSSM models with arbitrary gaugino masses at the GUT scale with additional restriction of top-bottom-tau Yukawa unification, as predicted by minimal SO(10) GUTs. Many patterns of gaugino masses leading to enhanced Higgs to diphoton rate and the Yukawa unification are identified. Some of these patterns can be accommodated in a well-motivated scenarios such as mirage mediation or SUSY breaking F -terms being a nonsinglet of SO(10). Phenomenological implications of a scenario with non-universal gaugino masses generated by a mixture of the singlet F -term and the F -term in a 24-dimensional representation of SU(5) ⊂ SO(10) are studied in detail. Possible non-universalities of other soft terms generated by such F-terms are discussed. The enhancement of Higgs to diphoton rate up to 30% can be obtained in agreement with all phenomenological constraints, including vacuum metastability bounds. The lightest sbottom and pseudoscalar Higgs are within easy reach of the 14 TeV LHC. The LSP can be either bino-like or wino-like. The thermal relic abundance in the former case may be in agreement with the cosmological data thanks to efficient stau coannihilation.

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Explaining the Higgs decays at the LHC with an extended electroweak model

Cited by 47 publications

References 53 publications

A 331 WIMPy dark radiation model

A 331 WIMPy dark radiation model

The muon anomalous magnetic moment in the reduced minimal 3-3-1 model

Light staus and enhanced Higgs diphoton rate with non-universal gaugino masses and SO(10) Yukawa unification

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