The fifth dimension as an analogue computer for strong interactions at the LHC

Abstract

We present a mechanism to get S ~ 0 or even negative, without bringing into play the SM fermion sector. This mechanism can be applied to a wide range of 5D models, including composite Higgs and Higgsless models. As a realization of the mechanism we introduce a simple model, although the effect on S does not rely on the underlying dynamics generating the background. Models that include this mechanism enjoy the following features: weakly-coupled light resonances (as light as 600 GeV) and degenerate or inverted resonance spectrum.

JHEP version. References added

References in corpus (8)

• Linear Confinement and AdS/QCD
• A custodial symmetry for Zbb
• Light custodians in natural composite Higgs models
• The Minimal Set of Electroweak Precision Parameters
• QCD and dimensional deconstruction
• A negative S parameter from Holographic Technicolor
• The Gaugephobic Higgs
• Precision electro-weak parameters from AdS5, localized kinetic terms and anomalous dimensions

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• The discontinuities of conformal transitions and mass spectra of V-QCD
• The S-parameter in Holographic Technicolor Models
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