Unitarity in $WW \to WW$ elastic scattering in topologically massive   SU(2) gauge theory
  We consider the elastic scattering of longitudinally polarized gauge bosons in an SU(2) generalization of topologically massive gauge theory in four dimensions. We show that the amplitude remains finite at large $s$, even though the theory does not contain a Higgs particle, in contradiction to common lore. 
Amitabha Lahiri and Debmalya Mukhopadhyay
hep-ph