Flavor Hierarchy from Extra Dimension and Gauge Threshold Correction
arXiv:hep-ph/0307365 · doi:10.1016/j.nuclphysb.2004.03.018
Abstract
Dynamical quasi-localization of matter fields in extra dimension is an elegant mechanism to generate hierarchical 4-dimensional Yukawa couplings. We point out that a bulk matter field whose zero mode is quasi-localized can give a large Kaluza-Klein threshold correction to low energy gauge couplings, which is generically of the order of ln (Yukawa)/8pi^2, so it can significantly affect gauge coupling unification. We compute such threshold corrections in generic 5-dimensional theories compactified on S^1/Z_2 X Z_2, and apply the result to grand unified theories on orbifold generating small Yukawa couplings through quasi-localization.
17 pages, 2 eps figures, revtex4. References updated
References in corpus (6)
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- Neutrinos in 5D SO(10) Unification
- Fermion Generations, Masses and Mixing Angles from Extra Dimensions
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Cited by in corpus (11)
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- Scherk-Schwarz Supersymmetry Breaking for Quasi-localized Matter Fields and Supersymmetry Flavor Violation
- Gauged Symmetries and Fayet-Iliopoulos Terms in 5D Orbifold Supergravity
- Scherk-Schwarz SUSY breaking from the viewpoint of 5D conformal supergravity
- 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
- Realistic Flipped SU(5) from Orbifold SO(10)
- SU(7) Unification of SU(3)_C*SU(4)_W* U(1)_{B-L}
- Gauge Threshold Corrections in Warped Geometry