2007/06/30 by Riccardo Barbieri, Brando Bellazzini, Slava Rychkov +2 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.76.115008
published as Phys.Rev.D76:115008,2007 · 22 pp; v3: Small corrections, version to be published in Phys. Rev. D
arxiv created 2007/10/07 · openalex publication_date 2007/12/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 in complying with the different constraints. The extended gauge sector relative to the standard SU(2)\ifmmode×\else\texttimes\fiU(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.