A Concrete Composite 2-Higgs Doublet Model

Abstract

We consider a Composite Higgs Model (CHM) with two isospin doublet Higgs fields arising as pseudo Nambu-Goldstone bosons from a $\mathrm{SO}(6)\to \mathrm{SO}(4)\times \mathrm{SO}(2)$ 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 $\mathrm{SO}(6)$ 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.

45 pages, 16 figures, version accepted for publication in JHEP

References in corpus (5)

• Light custodians in natural composite Higgs models
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Composite Higgs-Mediated FCNC
• On the Interpretation of Top Partners Searches
• Supersymmetry versus Compositeness: 2HDMs tell the story

Cited by in corpus (12)

• Supercool Composite Dark Matter Beyond 100 TeV
• Benchmarking Di-Higgs Production in Various Extended Higgs Sector Models
• Signatures of vector-like top partners decaying into new neutral scalar or pseudoscalar bosons
• Symmetry and geometry in generalized Higgs effective field theory -- Finiteness of oblique corrections v.s. perturbative unitarity
• Vector-like quarks: status and new directions at the LHC
• Double Higgs boson production at $e^{+}{e}^{-}$ colliders in the two-Higgs-doublet model
• Radiative generation of neutrino masses in a 3-3-1 type model
• Composite 2HDM with singlets: a viable dark matter scenario
• Reconciling Higgs physics and pseudo-Nambu-Goldstone dark matter in the S2HDM using a genetic algorithm
• Composite 2-Higgs Doublet Model: Strong Effects on Higgs Pair Production
• Scalar and fermion on-shell amplitudes in generalized Higgs effective field theory
• Enhanced Four-Body Decays of Charged Higgs Bosons into Off-Shell Pseudoscalar Higgs and $W^{\pm }$ Boson Pairs in a Lepton-Specific 2-Higgs Doublet Model