Are weak vector bosons composite?

Abstract

Recent CERN pp̅ collider data on anomalous Z^o events suggest, among other possibilities, a composite structure for the weak intermediate vector bosons. We present a short review of these developments and examine how far the scenario for weak interactions with such composite models of the weak vector bosons presents a viable alternative to the standard electroweak theory. In particular, we show how the scale of the dynamics underlying the composite structure is set by the magnitude of the weak mixing angle sin²θ_w and point out the possibility of accommodating the anomalous Z^o-ll̅γ decay events presently observed within this picture.