Trilinear Gauge Interactions in Extensions of the Standard Model and Unitarity

Abstract

We summarize recent work on the characterization of anomaly poles in connection with the field-theory interpretation of the Green-Schwarz mechanism of anomaly cancellation and on their effective field theories, stressing on the properties of the anomaly vertex in two representations, the Rosenberg and the Longitudinal/Transverse. The presence of polar amplitudes in these theories causes a violation of unitarity at high energy which is cured by the exchange of the axion. We comment on the possible physical implications of this mechanism.

Comments: 5 pages, 6 Figs. Presented at IFAE 2009, Bari, 15-17 April 2009, Italy