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The Higgs boson from an extended symmetry

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arxiv 0706.0432 v3 pith:ODZKLZYK submitted 2007-06-04 hep-ph

Riccardo Barbieri , Brando Bellazzini , Vyacheslav S. Rychkov , Alvise Varagnolo This is my paper · ORCID
classification hep-ph
keywords higgssymmetrybosondescriptiondiscussextendedlittleminimal
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The variety of ideas put forward in the context of a "composite" picture for the Higgs boson calls for a simple and effective description of the related phenomenology. Such a description is given here by means of a "minimal" model and is explicitly applied to the example of a Higgs-top sector from an SO(5) symmetry. We discuss the spectrum, the ElectroWeak Precision Tests, B-physics and naturalness. We show the difficulty to comply with the different constraints. The extended gauge sector relative to the standard SU(2)xU(1), if there is any, has little or no impact on these considerations. We also discuss the relation of the "minimal" model with its "little Higgs" or "holographic" extensions based on the same symmetry.

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Cited by 4 Pith papers

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    Lattice simulations of Sp(4) with three antisymmetric Dirac fermions find QCD-like confinement and chiral symmetry breaking, and provide a first continuum-extrapolated meson spectrum.

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