Composite Flavon-Higgs Models

Abstract

We consider a composite Higgs model based on the $SU(6)/Sp(6)$ coset, where an $U(1)$ subgroup of $Sp(6)$ is identified as the flavor symmetry. A complex scalar field $s$, which is a pseudo-Nambu-Goldstone boson of the broken symmetry, carries a flavor charge and plays the role of a flavon field. The $U(1{)}_F$ flavor symmetry is then broken by a VEV of the flavon field, which leads to a small parameter and generates the mass hierarchy between the top and bottom quarks. A light flavon below the TeV scale can be naturally introduced, which provides a fully testable model for the origin of flavor hierarchy. A light flavon also leads to substantial flavor changing neutral currents, which are strongly constrained by the flavor precision tests. The direct search of additional scalar bosons can also be conducted in HL-LHC and future hadron colliders.

arXiv comment12 pages, 1 figure, 3 tables; v2: two appendices added, matches version accepted for publication in PRD

References in corpus (21)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Updated Values of Running Quark and Lepton Masses
• Weak Radiative Decays of the B Meson and Bounds on $M_{H^{\pm }}$ in the Two-Higgs-Doublet Model
• Little Higgses from an Antisymmetric Condensate
• Flaxion: a minimal extension to solve puzzles in the standard model
• The Axiflavon
• Status of the Charged Higgs Boson in Two Higgs Doublet Models
• Combination of the searches for pair-produced vector-like partners of the third-generation quarks at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Search for vector-like T and B quark pairs in final states with leptons at $\sqrt{s}=$ 13 TeV
• Hunting the Flavon
• Vacuum alignment in a composite 2HDM
• 2HDM Neutral Scalars under the LHC
• Phenomenology of flavon fields at the LHC
• Creating the Fermion Mass Hierarchies with Multiple Higgs Bosons
• A Common Source for Scalars: Axiflavon-Higgs Unification
• Fermion Masses and Mixings in the Little Flavon Model
• The little flavons
• A More Natural Composite Higgs Model
• A heavy Higgs boson from flavor and electroweak symmetry breaking unification
• Flavor and electroweak symmetry breaking at the TeV scale

Cited by in corpus (1)

• A composite Froggatt-Nielsen model of flavor