hep-ph/0308038
Towards a Realistic Model of Higgsless Electroweak Symmetry Breaking
Authors: Csaba Csaki, Christophe Grojean, Luigi Pilo, John Terning
We present a 5D gauge theory in warped space based on a bulk SU(2)_L x SU(2)_R x U(1)_(B-L) gauge
group where the gauge symmetry is broken by boundary conditions. The symmetry breaking pattern and
the mass spectrum resembles that in the standard model (SM). To leading order in the warp factor
the rho parameter and the coupling of the Z (or equivalently the S-parameter) are as in the SM,
while corrections are expected at the level of a percent. From the AdS/CFT point of view the model
presented here can be viewed as the AdS dual of a (walking) technicolor-like theory, in the sense
that it is the presence of the IR brane itself that breaks electroweak symmetry, and not a
localized Higgs on the IR brane (which should be interpreted as a composite Higgs model). This
model predicts the lightest W, Z and photon resonances to be at around 1.2 TeV, and no
fundamental (or composite) Higgs particles.