Higgs Mechanism and Bulk Gauge Boson Masses in the Randall-Sundrum Model

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Abstract
Assuming the breaking of gauge symmetries by the Higgs mechanism, we consider the associated bulk gauge boson masses in the Randall-Sundrum background. With the Higgs field confined on the TeV-brane, the W and Z boson masses can naturally be an order of magnitude smaller than their Kaluza-Klein excitation masses. Current electroweak precision data requires the lowest excited state to lie above about 30 TeV, if fermions reside on the TeV-brane. Thus, some tuning of parameters is required to reproduce the measured W and Z boson masses. We also briefly summarize the bulk Higgs case, where the bounds on the lowest lying states are about an order of magnitude smaller.

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