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A singlet-triplet extension for the Higgs search at LEP and LHC

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arxiv 1212.5560 v1 pith:QH2RUYTW submitted 2012-12-21 hep-ph

classification hep-ph
keywords modelexplainextensionfermiongammahiggssearchargument
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abstract

We describe a simple extension of the standard model, containing a scalar singlet and a triplet fermion. The model can explain the possible enhancement in the decay $H \rightarrow \gamma \gamma$ at the LHC together with the excess found in the Higgs boson search at LEP2. The structure of the model is motivated by a recent argument, that was used to explain the number of fermion generations. For the sake of completenes we also considered the contributions from higher multiplets.

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Cited by 1 Pith paper

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  1. The Two Scales of New Physics in Loop-Induced Higgs Couplings

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A deviation in the loop-induced Higgs couplings hgg, hγγ, or hZγ caused solely by new vectorlike fermions implies an upper bound on the mass scale of new bosons needed to restore perturbativity and vacuum stability.

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