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arXiv · 1010.1160

Fermiophobia in a Higgs Triplet Model

A. G. Akeroyd·Marco A. Díaz·Maximiliano A. Rivera·Diego Romero
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Abstract

A Fermiophobic Higgs boson can arise in models with an extended Higgs sector, such as models with scalars in an isospin triplet representation. In a specific model with a scalar triplet and spontaneous violation of lepton number induced by a scalar singlet field, we show that fermiophobia is not a fine-tuned situation, unlike in Two Higgs Doublet Models. We study distinctive signals of fermiophobia which can be probed at the LHC. For the case of a small Higgs mass a characteristic signal would be a moderate B(H ->γγ) accompanied by a large B(H -> JJ) (where J is a Majoron), the latter being an invisible decay. For the case of a large Higgs mass there is the possibility of dominant H -> ZZ, WW and suppressed H -> JJ decay modes. In this situation, B(H -> ZZ) is larger than B(H -> WW), which differs from the SM prediction.

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A. G. Akeroyd, Marco A. Díaz, Maximiliano A. Rivera, Diego Romero. 2010-10-06. Fermiophobia in a Higgs Triplet Model. https://doi.org/10.1103/physrevd.83.095003

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