GAUGE BOSON MASSES DOMINANTLY GENERATED BY HIGGS-TRIPLET CONTRIBUTIONS

We discuss a model in which the Standard Model (SM) Higgs sector has b een extended by additional real and complex triplets. The rho almost-e qual-to 1 constraint is satisfied by restricting the potential to have an enlarged SU (2)L x SU (2)R global symmetry. This is fine tuning, w hich leads to a decreased predictability in next-to-leading order. In this model, however, the triplet vacuum expectation values may give th e dominating contribution to the gauge boson masses. Using a renormali zation group argument we constrain this region of the parameter space. Another interesting feature of this model is that one of the neutral scalars does not couple to the fermion sector at tree level and theref ore could have a relatively large branching ratio to 2gamma's. It is c oupled, however, to the Z-boson and therefore it could be produced at LEP via the standard e+e- --> Zphi mechanism with rates comparable to the ones of the Standard Model.