Anomalous glue, eta and eta-prime mesons

Abstract

Axial U(1) dynamics are characterised by large OZI violations. Here we review the phenomenology of eta and eta-prime production and decay processes, and its connection to the anomalous glue that generates a large part of the masses of these pseudoscalar mesons.

11 pages, invited talk at the Symposium on Meson Physics, Cracow, Poland, 1-4 October 2008