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A 125 GeV composite Higgs boson versus flavour and electroweak precision tests

  • Riccardo Barbieri
  • Dario ButtazzoEmail author
  • Filippo Sala
  • David M. Straub
  • Andrea Tesi
Article

Abstract

A composite Higgs boson of 125 GeV mass, only mildly fine-tuned, requires top partners with a semi-perturbative coupling and a mass not greater than about a TeV. We analyze the strong constraints on such picture arising from flavour and electroweak precision tests in models of partial compositeness. We consider different representations for the composite fermions and compare the case of an anarchic flavour structure to models with a U(3)3 and U(2)3 flavour symmetry. Although non trivially, some models emerge that look capable of accommodating a 125GeV Higgs boson with top partners in an interesting mass range for discovery at the LHC as well as associated flavour signals.

Keywords

Beyond Standard Model Technicolor and Composite Models Heavy Quark Physics CP violation 

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Copyright information

© SISSA, Trieste, Italy 2013

Authors and Affiliations

  • Riccardo Barbieri
    • 1
  • Dario Buttazzo
    • 1
    Email author
  • Filippo Sala
    • 1
  • David M. Straub
    • 2
  • Andrea Tesi
    • 1
  1. 1.Scuola Normale Superiore and INFNPisaItaly
  2. 2.Institut für Physik (THEP)Johannes Gutenberg-UniversitätMainzGermany

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