The Higgs boson from an extended symmetry

Details The Higgs boson from an extended symmetry The Higgs boson from an extended symmetry

2007-06-04

arxiv.org/abs/0706.0432v3

Phys.Rev.D76:115008,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pp; v3: Small corrections, version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.76.115008

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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