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Johan Rathsman. Photo.

Johan Rathsman

Senior lecturer

Johan Rathsman. Photo.

Higgs properties in a softly broken Inert Doublet Model

Author

  • Rikard Enberg
  • Johan Rathsman
  • Glenn Wouda

Summary, in English

We consider a model for the Higgs sector with two scalar doublets and a softly broken Z(2) symmetry, the Stealth Doublet Model. This model can be seen as a generalization of the Inert Doublet Model. One of the doublets is the Higgs doublet that participates in electroweak symmetry breaking and couples to fermions. The other doublet does not couple to fermions at tree level and does not acquire a vacuum expectation value. The broken Z(2) symmetry leads to interesting phenomenology such as mixing between the two doublets and charged and CP-odd scalars that can be light and have unusual decay channels. We present theoretical and experimental constraints on the model and consider the recent observation of a Higgs boson at the LHC. The data on the H -> gamma gamma channel can be naturally accommodated in the model, with either the lightest or the heaviest CP-even scalar playing the role of the observed particle.

Department/s

  • Theoretical Particle Physics

Publishing year

2013

Language

English

Publication/Series

Journal of High Energy Physics

Issue

8

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Higgs Physics
  • Beyond Standard Model

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479