Monte Carlo Exploration of Warped Higgsless Models

J. L. Hewett; B. Lillie; T. G. Rizzo

doi:10.1088/1126-6708/2004/10/014

paper

Monte Carlo Exploration of Warped Higgsless Models

arXiv:hep-ph/0407059 · doi:10.1088/1126-6708/2004/10/014

Abstract

We have performed a detailed Monte Carlo exploration of the parameter space for a warped Higgsless model of electroweak symmetry breaking in 5 dimensions. This model is based on the $S U (2)_{L} \times S U (2)_{R} \times U (1)_{B - L}$ gauge group in an AdS $_{5}$ bulk with arbitrary gauge kinetic terms on both the Planck and TeV branes. Constraints arising from precision electroweak measurements and collider data are found to be relatively easy to satisfy. We show, however, that the additional requirement of perturbative unitarity up to the cut-off, $≃ 10$ TeV, in $W_{L}^{+} W_{L}^{-}$ elastic scattering in the absence of dangerous tachyons eliminates all models. If successful models of this class exist, they must be highly fine-tuned.

26 pages, 7 figures; new fig and additional text added