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

  • Alexandre Alves
  • E. Ramirez BarretoEmail author
  • A. G. Dias
  • C. A. de S. Pires
  • Farinaldo S. Queiroz
  • P. S. Rodrigues da Silva
Regular Article - Theoretical Physics

Abstract

We show that the observed enhancement in the diphoton decays of the recently discovered new boson at the LHC, which we assume to be a Higgs boson, can be naturally explained by a new doublet of charged vector bosons from extended electroweak models with SU(3) C ⊗SU(3) L ⊗U(1) X symmetry. These models are also rather economical in explaining the measured signal strengths, within the current experimental errors, demanding fewer assumptions and less parameters tuning. Our results show a good agreement between the theoretical expected sensitivity to a 126–125 GeV Higgs boson, and the experimental significance observed in the diphoton channel at the 8 TeV LHC. Effects of an invisible decay channel for the Higgs boson are also taken into account, in order to anticipate a possible confirmation of deficits in the branching ratios into ZZ , WW , bottom quarks, and tau leptons.

Keywords

Higgs Boson Large Hadron Collider Gauge Boson Minimal Supersymmetric Standard Model Vector Boson 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by Conselho Nacional de Pesquisa e Desenvolvimento Científico—CNPq, Coordenação de Aperfeiçoamento Pessoal de Nível Superior—CAPES, and Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP.

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Copyright information

© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica 2013

Authors and Affiliations

  • Alexandre Alves
    • 1
  • E. Ramirez Barreto
    • 2
    Email author
  • A. G. Dias
    • 2
  • C. A. de S. Pires
    • 3
  • Farinaldo S. Queiroz
    • 3
    • 4
  • P. S. Rodrigues da Silva
    • 3
  1. 1.Departamento de Ciências Exatas e da TerraUniversidade Federal de São PauloDiademaBrazil
  2. 2.Centro de Ciências Naturais e HumanasUniversidade Federal do ABCSanto AndréBrazil
  3. 3.Departamento de FísicaUniversidade Federal da ParaíbaJoão PessoaBrazil
  4. 4.Center for Particle AstrophysicsFermi National Accelerator LaboratoryBataviaUSA

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