Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-04-26
Phys.Rev.Lett.97:211602,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
some wording modified
Scientific paper
10.1103/PhysRevLett.97.211602
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 \gamma only, is inconsistent with the experimental requirements \sin^2\theta_W\simeq 1/4 and \rho\equiv m_W^2/(m_Z^2\cos^2\theta_w)=1.
Grzadkowski Bohdan
Wudka Jose
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