Gauge/gravity dual dynamics for the strongly coupled sector of composite Higgs models

Abstract

A holographic model of chiral symmetry breaking is used to study the dynamics plus the meson and baryon spectrum of the underlying strong dynamics in composite Higgs models. The model is inspired by top-down D-brane constructions. We introduce this model by applying it to $N_f=2$ QCD. We compute meson masses, decay constants and the nucleon mass. The spectrum is improved by including higher dimensional operators to reflect the UV physics of QCD. Moving to composite Higgs models, we impose perturbative running for the anomalous dimension of the quark condensate in a variety of theories with varying number of colors and flavours. We compare our results in detail to lattice simulations for the following theories: $SU(2)$ gauge theory with two Dirac fundamentals; $Sp(4)$ gauge theory with fundamental and sextet matter; and $SU(4)$ gauge theory with fundamental and sextet quarks. In each case, the holographic results are encouraging since they are close to lattice results for masses and decay constants. Moreover, our models allow us to compute additional observables not yet computed on the lattice, to relax the quenched approximation and move to the precise fermion content of more realistic composite Higgs models not possible on the lattice. We also provide a new holographic description of the top partners including their masses and structure functions. With the addition of higher dimension operators, we show the top Yukawa coupling can be made of order one, to generate the observed top mass. Finally, we predict the spectrum for the full set of models with top partners proposed by Ferretti and Karateev.

arXiv comment57 pages + 5 pages (appendices), 20 figures, 12 tables; v2: minor additions, added references

References in corpus (68)

• A Large Mass Hierarchy from a Small Extra Dimension
• The Large N Limit of Superconformal Field Theories and Supergravity
• The Minimal Composite Higgs Model
• Low energy hadron physics in holographic QCD
• QCD and a Holographic Model of Hadrons
• Linear Confinement and AdS/QCD
• The Littlest Higgs
• Adding flavor to AdS/CFT
• Chiral symmetry breaking from five dimensional spaces
• Higgs as a Holographic Pseudo-Goldstone Boson
• Chiral Symmetry Breaking and Pions in Non-Supersymmetric Gauge/Gravity Duals
• Towards a holographic dual of large-N_c QCD
• Mesons in Gauge/Gravity Duals - A Review
• Meson Spectroscopy in AdS/CFT with Flavour
• Hadronic Spectrum of a Holographic Dual of QCD
• Walking in the SU(N)
• Perfect lattice action for asymptotically free theories
• Real-time response in AdS/CFT with application to spinors
• First results from 2+1 dynamical quark flavors on an anisotropic lattice: light-hadron spectroscopy and setting the strange-quark mass
• Fermionic UV completions of Composite Higgs models
• The Zero Temperature Chiral Phase Transition in SU(N) Gauge Theories
• Deconfinement and Gluon Plasma Dynamics in Improved Holographic QCD
• Isoscalar $\pi \pi$ scattering and the $\sigma$ meson resonance from QCD
• Holographic Models for QCD in the Veneziano Limit
• UV descriptions of composite Higgs models without elementary scalars
• Gauge theories of Partial Compositeness: Scenarios for Run-II of the LHC
• UV Completions of Partial Compositeness: The Case for a SU(4) Gauge Group
• Light Asymmetric Dark Matter on the Lattice: SU(2) Technicolor with Two Fundamental Flavors
• A negative S parameter from Holographic Technicolor
• Enhanced Global Symmetries and The Chiral Phase Transition
• Sp(4) gauge theory on the lattice: towards SU(4)/Sp(4) composite Higgs (and beyond)
• Holographic Estimate of Oblique Corrections for Technicolor
• Spectroscopy of SU(4) composite Higgs theory with two distinct fermion representations
• SU(2) Gauge Theory with Two Fundamental Flavours: a Minimal Template for Model Building
• Spectroscopy of fermionic operators in AdS/CFT
• 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
• Perfecting the Ultra-violet of Holographic Descriptions of QCD
• Holographic Bosonic Technicolor
• Massive holographic QCD in the Veneziano limit
• V-QCD: Spectra, the dilaton and the S-parameter
• The S-parameter in Holographic Technicolor Models
• Sp(4) gauge theories on the lattice: Quenched fundamental and antisymmetric fermions
• Exotic decays of top partners: mind the search gap
• Dynamic AdS/QCD and the Spectrum of Walking Gauge Theories
• $S$ Parameter in the Holographic Walking/Conformal Technicolor
• Top quark induced effective potential in a composite Higgs model
• Holography of the Conformal Window
• One-loop Chiral Perturbation Theory with two fermion representations
• Holographic Modelling of a Light Techni-Dilaton
• Identification of non-ordinary mesons from the dispersive connection between their poles and their Regge trajectories: the f0(500) resonance
• Holographic conformal transition and light scalars
• Hadron-Hadron Interactions from $N_f=2+1+1$ Lattice QCD: The $\rho$-resonance
• Towards a Perfect QCD Gravity Dual
• Fermions and baryons as open-string states from brane junctions
• Light composite fermions from holography
• Into the conformal window: multi-representation gauge theories
• Meson spectra of asymptotically free gauge theories from holography
• Exploring holographic Composite Higgs models
• Holographic Nambu Jona-Lasinio Interactions
• Neutral-naturalness from a holographic SO(6)/SO(5) composite Higgs model
• Holographic Gauged NJL Model: the Conformal Window and Ideal Walking
• A Holographic Study of the Gauged NJL Model
• Any Room Left for Technicolor? Dilepton Searches at the LHC and Beyond
• Highly Excited Hadrons in QCD and Beyond
• Any Room Left for Technicolor? Holographic Studies of NJL Assisted Technicolour
• Soft Walls in Dynamic AdS/QCD and the Techni-dilaton
• Holograms of a Dynamical Top Quark

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• Holographic modeling of nuclear matter and neutron stars
• Lattice studies of the $Sp(4)$ gauge theory with two fundamental and three antisymmetric Dirac fermions
• Loop-Generated Neutrino Masses in Composite Higgs Models
• Phenomenology of unusual top partners in composite Higgs models
• Holographic models of composite Higgs in the Veneziano limit. Part I. Bosonic sector
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• Machine learning-enhanced search for a vectorlike singlet $B$ quark decaying to a singlet scalar or pseudoscalar
• Effective Theories with Dark Matter Applications
• Heavy vector-like quarks decaying to exotic scalars: a case study with triplets
• Towards top-down holographic composite Higgs: minimal coset from maximal supergravity
• Toward minimal composite Higgs models from regular geometries in bottom-up holography
• Topological Defects Formation with Momentum Dissipation
• Probing composite Higgs boson substructure at the HL-LHC
• Holographic Non-Abelian Flavour Symmetry Breaking
• Coloured spin-1 states in composite Higgs models
• Holography for Sp(2$N_c$) Gauge Dynamics: from Composite Higgs to Technicolour
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• Electroweak spin-1 resonances in Composite Higgs models
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