RS1, custodial isospin and precision tests

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Published 12 September 2003 Published under licence by IOP Publishing Ltd
, , Citation Kaustubh Agashe et al JHEP08(2003)050 DOI 10.1088/1126-6708/2003/08/050

1126-6708/2003/08/050

Abstract

We study precision electroweak constraints within a RS1 model with gauge fields and fermions in the bulk. The electroweak gauge symmetry is enhanced to SU(2)L × SU(2)R × U(1)BL, thereby providing a custodial isospin symmetry sufficient to suppress excessive contributions to the T parameter. We then construct complete models, complying with all electroweak constraints, for solving the hierarchy problem, without supersymmetry or large hierarchies in the fundamental couplings. Using the AdS/CFT correspondence our models can be interpreted as dual to a strongly coupled conformal Higgs sector with global custodial isospin symmetry, gauge and fermionic matter being fundamental fields external to the CFT. This scenario has interesting collider signals, distinct from other RS models in the literature.

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10.1088/1126-6708/2003/08/050