Unitarity in $WW\to WW$ elastic scattering in topologically massive SU(2) gauge theory

Abstract

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.

Comments: RevTeX 4, 7 pages, 8 figures;v2: refs and discussion added, typo in eq.(20) corrected; v3: title and abstract changed, many sentences rephrased, calculations and main result unchanged