RS1, Custodial Isospin and Precision Tests

Details RS1, Custodial Isospin and Precision Tests RS1, Custodial Isospin and Precision Tests

2003-08-05

arxiv.org/abs/hep-ph/0308036v2

JHEP 0308:050,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 6 figures, latex2e, minor changes, references added

Scientific paper

10.1088/1126-6708/2003/08/050

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 \times SU(2)_R \times U(1)_{B-L}, 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 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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