Anomalies, η-η' mixing, and the exotic antiρ(1,1-+)

The importance of the η'(η) to 2 gluons matrix element in the study of glue-rich states motivates this study. A consistent picture of the η - η' emerges while the measurement of η' → π+π-πo appears as a probe of various models proposed to account for η' → η π π. The exotic antiρ(I = 1, Jpc = 1-+) might decay preferably into η'π, due to anomalies