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arXiv · hep-ph/0604225

5-Dimensional Difficulties of Gauge-Higgs Unifications

Bohdan Grzadkowski·Jose Wudka
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Abstract

We consider 5 dimensional gauge theories where the 5th direction is compactified on the orbifold S^1/Z_2, and where the 5th components of the gauge bosons play the role of the Standard Model Higgs boson (gauge-Higgs unification). The gauge symmetry breaking is realized through the appropriate orbifold boundary conditions and through the Hosotani mechanism. We show that for {\em any such theory} the assumption that the low-energy vector-boson spectrum consists of the W^\pm, Z and γonly, is inconsistent with the experimental requirements \sin^2θ_W\simeq 1/4 and ρ\equiv m_W^2/(m_Z^2\cos^2θ_w)=1.

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Bohdan Grzadkowski, Jose Wudka. 2006-05-16. 5-Dimensional Difficulties of Gauge-Higgs Unifications. https://doi.org/10.1103/physrevlett.97.211602

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