Gauge-Assisted Technicolor?

Abstract

It is well known that technicolor models in which the electroweak symmetry is broken by QCD-like strong dynamics at the TeV scale generally predict unacceptably large corrections to low-energy observables. We investigate the models of electroweak symmetry breaking by strong dynamics in which the gauge symmetry is extended to include an arbitrary number of additional SU(2) and U(1) factors. This class of models includes the deconstructed version of the recently proposed five-dimensional "Higgsless" scenario. We conclude that the additional structure present in these theories does not suppress the effects of strongly coupled short-distance physics on the precision electroweak observables. In particular, the possibility that the symmetry breaking is due to QCD-like dynamics is still strongly disfavored by data.

25 pages, 3 figures; very minor changes, some references added

References in corpus (9)

• Towards a Realistic Model of Higgsless Electroweak Symmetry Breaking
• Fermions on an Interval: Quark and Lepton Masses without a Higgs
• Weakly coupled Higgsless theories and precision electroweak tests
• Higgsless Theory of Electroweak Symmetry Breaking from Warped Space
• Holographic Theories of Electroweak Symmetry Breaking without a Higgs Boson
• Higgsless Electroweak Symmetry Breaking from Theory Space
• Higgsless Electroweak Symmetry Breaking in Warped Backgrounds: Constraints and Signatures
• Warped Higgsless Models with IR--Brane Kinetic Terms
• The structure of electroweak corrections due to extended gauge symmetries

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• Oblique S and T Constraints on Electroweak Strongly-Coupled Models with a Light Higgs
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• Little M-theory
• The Three Site Model at One-Loop
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• LHC String Phenomenology
• Ideal Fermion Delocalization in Five Dimensional Gauge Theories
• Chiral-logarithmic Corrections to the S and T Parameters in Higgsless Models
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• W_L W_L Scattering in Higgsless Models: Identifying Better Effective Theories
• Effective fermion couplings in warped 5D Higgsless theories
• Unitarity and Bounds on the Scale of Fermion Mass Generation
• One-loop Corrections to the S Parameter in the Four-site Model
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• Improved analysis of the bounds from the electroweak precision tests on the 4-site model
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