Effective theories of gauge-Higgs unification models in warped spacetime

Abstract

We derive four-dimensional (4D) effective theories of the gauge-Higgs unification models in the warped spacetime. The effective action can be expressed in a simple form by neglecting subleading corrections to the wave functions. We have shown in our previous works that some Higgs couplings to the other fields are suppressed by factors that depend on ${\bar{\theta }}_H$ from the values in the standard model. Here ${\bar{\theta }}_H$ is the Wilson line phase along the fifth dimension, which characterizes the electroweak symmetry breaking. The effective action derived here explicitly shows a nonlinear structure of the Higgs sector, which clarifies the origins of those suppression factors.

arXiv comment36 pages, 1 figure

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