Off-the-Wall Higgs in the Universal Randall-Sundrum Model

Details Off-the-Wall Higgs in the Universal Randall-Sundrum Model Off-the-Wall Higgs in the Universal Randall-Sundrum Model

2005-08-26

arxiv.org/abs/hep-ph/0508279v2

JHEP 0608 (2006) 042

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 4 figures

Scientific paper

10.1088/1126-6708/2006/08/042

We outline a consistent Randall-Sundrum (RS) framework in which a fundamental 5-dimensional Higgs doublet induces electroweak symmetry breaking (EWSB). In this framework of a warped Universal Extra Dimension, the lightest Kaluza-Klein (KK) mode of the bulk Higgs is tachyonic leading to a vacuum expectation value (vev) at the TeV scale. The consistency of this picture imposes a set of constraints on the parameters in the Higgs sector. A novel feature of our scenario is the emergence of an adjustable bulk profile for the Higgs vev. We also find a tower of non-tachyonic Higgs KK modes at the weak scale. We consider an interesting implementation of this ``Off-the-Wall Higgs'' mechanism where the 5-dimensional curvature-scalar coupling alone generates the tachyonic mode responsible for EWSB. In this case, additional relations among the parameters of the Higgs and gravitational sectors are established. We discuss the experimental signatures of the bulk Higgs in general, and those of the ``Gravity-Induced'' EWSB in particular.

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