Fermion Flavor in Soft-Wall AdS
arXiv:0907.3523 · doi:10.1103/PhysRevD.80.065015
Abstract
The formalism for modeling multiple fermion generations in a warped extra dimension with a soft-wall is presented. A bulk Higgs condensate is responsible for generating mass for the zero-mode fermions but leads to additional complexity from large mixing between different flavors. We extend existing single-generation analyses by considering new special cases in which analytical solutions can be derived and discuss flavor constraints. The general three-generation case is then treated using a simple numerical routine. Assuming anarchic 5D parameters we find a fermion mass spectrum resembling the standard model quarks and leptons with highly degenerate couplings to Kaluza-Klein gauge bosons. This confirms that the soft-wall model has similar attractive features as that found in hard-wall models, providing a framework to generalize existing phenomenological analyses.
22 pages, 8 figures
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- Suppressing Lepton Flavour Violation in a Soft-Wall Extra Dimension
- LHC Signals of Non-Custodial Warped 5D Models
- Flavour Physics in the Soft Wall Model
- Holographic models of composite Higgs in the Veneziano limit. Part II. Fermionic sector
- Warped Universal Extra Dimensions
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- The Effective Lagrangian for Bulk Fermions in Models with Extra Dimensions
- Flavor-changing decays of the top quark in 5D warped models
- Higgs Production in General 5D Warped Models
- Avoiding the dangers of a soft-wall singularity
- Residue theorem and summing over Kaluza-Klein excitations
- Higgs boson production and decay in 5D warped models
- Stability of gravity-scalar systems for domain-wall models with a soft wall
- Constraints on Models with Warped Extra Dimensions