Phenomenology of Infrared Smooth Warped Extra Dimensions

Abstract

We study the effect of the infrared (IR) geometry on the phenomenology of warped extra dimensions with gauge and fermion fields in the bulk. We focus in particular on a "mass gap" metric which is AdS in the ultraviolet, but asymptotes to flat space in the IR, breaking conformal symmetry. These metrics can be dialed to approximate well the geometries arising in certain classes of warped string compactifications. We find, similar to our earlier results on the Kaluza-Klein (KK) graviton, that these metrics give rise to phenomenologically significant shifts in the separation of KK gauge modes in the mass spectrum (up to factors of ~2) and their couplings to IR localized fields (up to factors of ~5-10 increase). We find that, despite shifts in the spectra, the constraint m_KK > 3 TeV from S remains robust in the class of 5-d mass gap metrics, and that the change to T is not significant enough to remove the need for custodial symmetry.

27 Pages, 15 figures

References in corpus (15)

• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Flux Compactification
• LHC Signals from Warped Extra Dimensions
• Warped Gravitons at the LHC and Beyond
• The Bulk RS KK-gluon at the LHC
• Light Kaluza-Klein States in Randall-Sundrum Models with Custodial SU(2)
• Electroweak constraints on warped models with custodial symmetry
• LHC Signals for Warped Electroweak Neutral Gauge Bosons
• Progress in D-brane model building
• DBI Inflation in the Tip Region of a Warped Throat
• Kaluza-Klein Gluons as a Diagnostic of Warped Models
• Warped Deformed Throats have Faster (Electroweak) Phase Transitions
• Observing the Geometry of Warped Compactification via Cosmic Inflation
• Electroweak observables in a general 5D background
• Probing the Geometry of Warped String Compactifications at the LHC

Cited by in corpus (12)

• Electroweak Breaking on a Soft Wall
• Flavor Violation Tests of Warped/Composite SM in the Two-Site Approach
• LHC Signals for Warped Electroweak Charged Gauge Bosons
• Relaxing Constraints from Lepton Flavor Violation in 5D Flavorful Theories
• LHC Signals for Coset Electroweak Gauge Bosons in Warped/Composite PGB Higgs Models
• Probing massless and massive gravitons via entanglement in a warped extra dimension
• On the possibility of light string resonances at the LHC and Tevatron from Randall-Sundrum throats
• Bulk Fermions in Warped Models with a Soft Wall
• Top Quarks as a Window to String Resonances
• Reducing Constraints in a Higher Dimensional Extension of the Randall and Sundrum Model
• Electroweak Constraints on Warped Geometry in Five Dimensions and Beyond
• Novel modulus stabilization mechanism in higher dimensional f(R) Gravity