Journal of High Energy Physics

, 2018:51 | Cite as

A concrete composite 2-Higgs doublet model

  • Stefania De Curtis
  • Luigi Delle Rose
  • Stefano Moretti
  • Kei Yagyu
Open Access
Regular Article - Theoretical Physics


We consider a Composite Higgs Model (CHM) with two isospin doublet Higgs fields arising as pseudo Nambu-Goldstone bosons from a SO(6) → SO(4) × SO(2) breaking. The main focus of this work is to explicitly compute the properties of these Higgses in terms of the fundamental parameters of the composite sector such as masses, Yukawa and gauge couplings of the new spin-1 and spin-1/2 resonances. Concretely, we calculate the Higgs potential at one-loop level through the Coleman-Weinberg mechanism from the explicit breaking of the SO(6) global symmetry by the partial compositeness of fermions and gauge bosons. We derive then the phenomenological properties of the Higgs states and highlight the main signatures of this Composite 2-Higgs Doublet Model at the Large Hadron Collider, including modifications to the SM-like Higgs couplings as well as production and decay channels of heavier Higgs bosons. We also consider flavour bounds that are typical of CHMs with more than one Higgs doublet.


Beyond Standard Model Higgs Physics Technicolor and Composite Models 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2018

Authors and Affiliations

  • Stefania De Curtis
    • 1
  • Luigi Delle Rose
    • 2
    • 1
  • Stefano Moretti
    • 2
    • 3
  • Kei Yagyu
    • 4
  1. 1.INFN — Sezione di Firenze, and Department of Physics and AstronomyUniversity of FlorenceSesto FiorentinoItaly
  2. 2.School of Physics and AstronomyUniversity of SouthamptonSouthamptonU.K.
  3. 3.Particle Physics Department, Rutherford Appleton LaboratoryOxonU.K.
  4. 4.Seikei University, MusashinoTokyoJapan

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