Unified Flavor Symmetry from warped dimensions

Abstract

We propose a scenario which accommodates all the masses and mixings of the SM fermions in a model of warped extra-dimensions with all matter fields in the bulk. In this scenario, the same flavor symmetric structure is imposed on all the fermions of the Standard Model (SM), including neutrinos. Due to the exponential sensitivity on bulk fermion masses, a small breaking of the symmetry can be greatly enhanced and produce seemingly un-symmetric hierarchical masses and small mixing angles among the charged fermion zero-modes (SM quarks and charged leptons) and wash-out the obvious effects of the symmetry. With the Higgs field leaking into the bulk, and Dirac neutrinos sufficiently localized towards the UV boundary, the neutrino mass hierarchy and flavor structure will still be largely dominated by the fundamental flavor structure. The neutrino sector would then reflect the fundamental flavor structure, whereas the quark sector would probe the effects of the flavor symmetry breaking sector. As an example, we explore these features in the context of a family permutation symmetry imposed in both quark and lepton sectors.

arXiv comment5 pages, 1 figure

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• A variant of 3-3-1 model for the generation of the SM fermion mass and mixing pattern
• Charged lepton flavor violating Higgs decays at future $e^{+}{e}^{-}$ colliders
• A predictive $331$ model with $A_4$ flavour symmetry
• Adjoint $SU(5)$ GUT model with $T_7$ flavor symmetry
• A novel Randall-Sundrum model with $S_3$ flavor symmetry
• Probing Higgs-radion mixing in warped models through complementary searches at the LHC and the ILC
• SU(6) Gauge-Higgs Grand Unification: Minimal Viable Models and Flavor
• Stability of the Standard Model Vacuum with Vector-Like Leptons: A Critical Examination
• Active Dirac Neutrinos via $SU(2{)}_L$ Doublets in 5d
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