A Near-Conformal Composite Higgs Model

Abstract

We analyze a composite Higgs model based on the confining $SU(3)$ gauge theory with $N_f=8$ Dirac fermions in the fundamental representation. This gauge theory has been studied on the lattice and shown to be well described by a dilaton effective field theory (EFT). Here we modify the EFT by assigning standard-model quantum numbers such that four of the composite pseudo-Nambu-Goldstone boson (pNGB) fields form the standard-model Higgs doublet, by coupling it to the top quark, and by adding to the potential a term that triggers electroweak symmetry breaking. The model contains a pNGB Higgs boson, a set of heavier pNGBs, and an approximate dilaton in the same mass range. We study the phenomenology of the model, and discuss the amount of tuning required to insure consistency with current direct and indirect bounds on new physics, highlighting the role of the dilaton field.

arXiv comment7 pages, 1 figure. Typos corrected and references added

References in corpus (43)

• Combined measurements of Higgs boson production and decay using up to $80$ fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment
• The Composite Nambu-Goldstone Higgs
• Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Gauge theories of Partial Compositeness: Scenarios for Run-II of the LHC
• Light composite scalar in eight-flavor QCD on the lattice
• Higher-Loop Corrections to the Infrared Evolution of a Gauge Theory with Fermions
• Strongly interacting dynamics and the search for new physics at the LHC
• Can the nearly conformal sextet gauge model hide the Higgs impostor?
• Nonperturbative investigations of SU(3) gauge theory with eight dynamical flavors
• Low-energy effective action for pions and a dilatonic meson
• Sp(4) gauge theory on the lattice: towards SU(4)/Sp(4) composite Higgs (and beyond)
• Fundamental Composite Higgs Dynamics on the Lattice: SU(2) with Two Flavors
• Light flavor-singlet scalars and walking signals in $N_f=8$ QCD on the lattice
• Fundamental Composite 2HDM: SU(N) with 4 flavours
• Dilaton Chiral Perturbation Theory - Determining Mass and Decay Constant of Technidilaton on the Lattice
• Dilaton EFT Framework For Lattice Data
• SU(2) Gauge Theory with Two Fundamental Flavours: a Minimal Template for Model Building
• Spectroscopy of SU(4) composite Higgs theory with two distinct fermion representations
• Dark Nuclei II: Nuclear Spectroscopy in Two-Colour QCD
• Light scalars in composite Higgs models
• Sp(4) gauge theories on the lattice: $N_f=2$ dynamical fundamental fermions
• Baryon spectrum of SU(4) composite Higgs theory with two distinct fermion representations
• Extending Chiral Perturbation Theory with an Isosinglet Scalar
• The large-mass regime of the dilaton-pion low-energy effective theory
• Di-boson signatures as Standard Candles for Partial Compositeness
• The Dilaton Potential and Lattice Data
• Analysis of a Dilaton EFT for Lattice Data
• Sp(4) gauge theories on the lattice: Quenched fundamental and antisymmetric fermions
• Partial compositeness and baryon matrix elements on the lattice
• Effective pion mass term and the trace anomaly
• Scheme-Independent Calculation of ${\gamma }_{\bar{\psi }\psi ,IR}$ for an SU(3) Gauge Theory
• Strong dynamics with matter in multiple representations: SU(4) gauge theory with fundamental and sextet fermions
• Finite-temperature phase structure of SU(4) gauge theory with multiple fermion representations
• Application of dilaton chiral perturbation theory to $N_f=8$, $\mathrm{SU}(3)$ spectral data
• Chiral effective theories with a light scalar at one loop
• The twelve-flavor $\mathbf{\beta }$-function and dilaton tests of the sextet scalar
• Explorations beyond dilaton chiral perturbation theory in the eight-flavor SU(3) gauge theory
• $SU(2)$ Gauge Theory with Two Fundamental Flavours: Scalar and Pseudoscalar Spectrum
• Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories
• Update on SU(2) gauge theory with NF = 2 fundamental flavours
• Gluon-Photon Signatures for color octet at the LHC (and beyond)
• Composite Higgs Dynamics on the Lattice
• A dilaton-pion mass relation

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• Emergent strongly coupled ultraviolet fixed point in four dimensions with 8 Kähler-Dirac fermions
• Dilaton and Massive Hadrons in a Conformal Phase
• Hidden Conformal Symmetry from the Lattice
• Goldstone Boson Scattering with a Light Composite Scalar
• Towards top-down holographic composite Higgs: minimal coset from maximal supergravity
• The Coulomb branch of N=4 SYM and dilatonic scions in supergravity
• Toward minimal composite Higgs models from regular geometries in bottom-up holography
• Gradient flow step-scaling function for SU(3) with $N_f=8$ fundamental flavors
• Phase transitions and light scalars in bottom-up holography
• Light dilaton near critical points in top-down holography
• Charging the conformal window at nonzero $\theta$ angle
• Dilaton in scalar QFT: a no-go theorem in $4-\epsilon$ and $3-\epsilon$ dimensions
• Composite two-Higgs doublet model from dilaton effective field theory