Electroweak Constraints on Minimal Higher-Dimensional Extensions of the Standard Model

Details Electroweak Constraints on Minimal Higher-Dimensional Extensions of the Standard Model Electroweak Constraints on Minimal Higher-Dimensional Extensions of the Standard Model

2002-03-04

arxiv.org/abs/hep-ph/0203032v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of the Summer School on High Energy Physics in Corfu, Greece, September 2001

Scientific paper

We derive electroweak constraints on the compactification scale of minimal 5-dimensional extensions of the Standard Model, in which all or only some of the SU(2)$_L$ and U(1)$_Y$ gauge fields and Higgs bosons feel the presence of the fifth dimension. In our analysis, we assume that the fermions are always localized on a 3-brane. In this context, we also present the consistent quantization procedure of the higher-dimensional models in the generalized $R_\xi$ gauge. We find that the usually derived lower bound of $\sim 4$ TeV on the compactification scale may be significantly lowered to $\sim 3$ TeV if the SU(2)$_L$ gauge boson is the only particle that propagates in all 5 dimensions.

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