Twisted Split Fermions

Abstract

The observed flavor structure of the standard model arises naturally in "split fermion" models which localize fermions at different places in an extra dimension. It has, until now, been assumed that the bulk masses for such fermions can be chosen to be flavor diagonal simultaneously at every point in the extra dimension, with all the flavor violation coming from the Yukawa couplings to the Higgs. We consider the more natural possibility in which the bulk masses cannot be simultaneously diagonalized, that is, that they are twisted in flavor space. We show that, in general, this does not disturb the natural generation of hierarchies in the flavor parameters. Moreover, it is conceivable that all the flavor mixing and CP-violation in the standard model may come only from twisting, with the five-dimensional Yukawa couplings taken to be universal.

15 pages, 1 figure

References in corpus (4)

• Flavor violation and extra dimensions
• Neutrino Mass Patterns within the See-saw Model from Multi-localization along Extra Dimensions
• Low-energy effective theory from a non-trivial scalar background in extra dimensions
• Phenomenology of a Quark Mass Matrix from Six Dimensions and its implication for the Strong CP problem

Cited by in corpus (21)

• Implications of D^0-\bar D^0 Mixing for New Physics
• Flavor from Minimal Flavor Violation & a Viable Randall-Sundrum Model
• The Soft-Wall Standard Model
• Modified Higgs Physics from Composite Light Flavors
• Anomalies, Chern-Simons Terms and Chiral Delocalization in Extra Dimensions
• Chiral Nelson--Barr Models: Quality and Cosmology
• Fermion Flavor in Soft-Wall AdS
• Large lepton mixing angles from a 4+1-dimensional SU(5) x A(4) domain-wall braneworld model
• Higgs Localization in Split Fermion Models
• Split Fermions Baryogenesis from the Kobayashi-Maskawa Phase
• Neutrino Masses and Mixing in Models with Large Extra Dimensions and Localized Fermions
• Fermion masses and mixing in a 4+1-dimensional SU(5) domain-wall brane model
• A Hybrid Model of Neutrino Masses and Oscillations: Bulk Neutrinos in the Split-Fermion Scenario
• Neutrino Masses via the Zee Mechanism in 5D split fermions model
• Quark-lepton mass unification at TeV scales
• Charged lepton electric dipole moments with the localized leptons and the new Higgs doublet in the two Higgs doublet model
• Combining Left-Right And Quark-Lepton Symmetries In 5D
• The radiative lepton flavor violating decays in the split fermion scenario in the two Higgs doublet model
• Generating the Baryon Asymmetry of the Universe in Split Fermion Models
• The effect of the Gaussian profile of the new Higgs doublet on the radiative lepton flavor violating decay
• Charged Lepton Flavor Physics and Extra Dimensions