Bulk Fermions in Warped Models with a Soft Wall
arXiv:0905.3032 · doi:10.1103/PhysRevD.80.035005
Abstract
We study bulk fermions in models with warped extra dimensions in the presence of a soft wall. Fermions can acquire a position dependent bulk Dirac mass that shields them from the deep infrared, allowing for a systematic expansion in which electroweak symmetry breaking effects are treated perturbatively. Using this expansion, we analyze properties of bulk fermions in the soft wall background. These properties include the realization of non-trivial boundary conditions that simulate the ones commonly used in hard wall models, the analysis of the flavor structure of the model and the implications of a heavy top. We implement a soft wall model of electroweak symmetry breaking with custodial symmetry and fermions propagating in the bulk. We find a lower bound on the masses of the first bosonic resonances, after including the effects of the top sector on electroweak precision observables for the first time, of m_{KK} \gtrsim 1-3 TeV at the 95% C.L., depending on the details of the Higgs, and discuss the implications of our results for LHC phenomenology.
34 pages, 8 figures
References in corpus (26)
- Linear Confinement and AdS/QCD
- Echoes of a Hidden Valley at Hadron Colliders
- Unparticle Physics
- A custodial symmetry for Zbb
- Light custodians in natural composite Higgs models
- The Flavor of the Composite Pseudo-Goldstone Higgs
- Flavor Physics in the Randall-Sundrum Model: I. Theoretical Setup and Electroweak Precision Tests
- The Bulk RS KK-gluon at the LHC
- Light Kaluza-Klein States in Randall-Sundrum Models with Custodial SU(2)
- Delta F=2 Observables and Fine-Tuning in a Warped Extra Dimension with Custodial Protection
- LHC Signals for Warped Electroweak Neutral Gauge Bosons
- Rare K and B Decays in a Warped Extra Dimension with Custodial Protection
- A GIM Mechanism from Extra Dimensions
- Electroweak Breaking on a Soft Wall
- Flavor Violation Tests of Warped/Composite SM in the Two-Site Approach
- Dynamical Soft-Wall AdS/QCD
- Minimal Flavor Protection: A New Flavor Paradigm in Warped Models
- A Simple Flavor Protection for RS
- Resolving the A_{FB}^b puzzle in an extra dimensional model with an extended gauge structure
- A New Custodian for a Realistic Higgsless Model
- The Soft-Wall Standard Model
- Dark Matter and Electroweak Symmetry Breaking in Models with Warped Extra Dimensions
- Probing the Geometry of Warped String Compactifications at the LHC
- Fermion Mass Hierarchy from the Soft Wall
- A Flavor Protection for Warped Higgsless Models
- On the Perturbative Approach in the Randall-Sundrum Model
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- Warped 5-Dimensional Models: Phenomenological Status and Experimental Prospects
- Warped Electroweak Breaking Without Custodial Symmetry
- Phenomenology of Non-Custodial Warped Models
- LHC Signals for Coset Electroweak Gauge Bosons in Warped/Composite PGB Higgs Models
- TASI Lectures on Effective Field Theory and Precision Electroweak Measurements
- Stability of Scalar Fields in Warped Extra Dimensions
- 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
- Fermion Flavor in Soft-Wall AdS
- Unified Flavor Symmetry from warped dimensions
- Holographic models of composite Higgs in the Veneziano limit. Part II. Fermionic sector
- Warped Universal Extra Dimensions
- On the stability of a soft-wall model
- 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
- Fermion Masses and Mixing in General Warped Extra Dimensional Models
- Avoiding the dangers of a soft-wall singularity
- Bulk Higgs and the 750 GeV diphoton signal
- 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
- A nearly Dirichlet Higgs for lower-scale warped extra dimensions
- Studies on Generalized Warped Five-Dimensional Models
- Constraints on Models with Warped Extra Dimensions