We present an example of a realistic Higgsless model that makes use of alternative SU(2)R assignments for the top and bottom quarks recently proposed by Agashe et al. which results in an enhanced custodial symmetry. Using these new representat ions reduces the deviations in the Zbℓbˉℓ coupling to ∼4 for a wide range of parameters, while this remaining correction can also be eliminated by varying the localization parameter (bulk mass) for br.
@article{arxiv.hep-ph/0607146,
title = {A New Custodian for a Realistic Higgsless Model},
author = {Giacomo Cacciapaglia and Csaba Csáki and Guido Marandella and John Terning},
journal= {arXiv preprint arXiv:hep-ph/0607146},
year = {2008}
}