Electroweak Constraints on Warped Geometry in Five Dimensions and Beyond

Abstract

Here we consider the tree level corrections to electroweak (EW) observables from standard model (SM) particles propagating in generic warped extra dimensions. The scale of these corrections is found to be dominated by three parameters, the Kaluza-Klein (KK) mass scale, the relative coupling of the KK gauge fields to the Higgs and the relative coupling of the KK gauge fields to fermion zero modes. It is found that 5D spaces that resolve the hierarchy problem through warping typically have large gauge-Higgs coupling. It is also found in $D>5$ where the additional dimensions are warped the relative gauge-Higgs coupling scales as a function of the warp factor. If the warp factor of the additional spaces is contracting towards the IR brane, both the relative gauge-Higgs coupling and resulting EW corrections will be large. Conversely EW constraints could be reduced by finding a space where the additional dimension's warp factor is increasing towards the IR brane. We demonstrate that the Klebanov Strassler solution belongs to the former of these possibilities.

18 pages, 3 figures (references added) version to appear in JHEP

References in corpus (5)

• The Little Randall-Sundrum Model at the Large Hadron Collider
• Electroweak observables in a general 5D background
• Phenomenology of Infrared Smooth Warped Extra Dimensions
• On the Perturbative Approach in the Randall-Sundrum Model
• New Dimensions for Randall-Sundrum Phenomenology

Cited by in corpus (7)

• Warped Electroweak Breaking Without Custodial Symmetry
• Suppressing Electroweak Precision Observables in 5D Warped Models
• The Fermion Mass Hierarchy in Models with Warped Extra Dimensions and a Bulk Higgs
• Non-Custodial Warped Extra Dimensions at the LHC?
• Exploring holographic Composite Higgs models
• Bulk Higgs and Gauge fields in a multiply warped braneworld model
• Reducing Constraints in a Higher Dimensional Extension of the Randall and Sundrum Model