par Ball, Patricia;Frère, Jean-Marie ;Tytgat, Michel
Référence Physics Letters B, 365, page (367-376)
Publication Publié, 1996
Article révisé par les pairs
Résumé : We discuss the effect of η-η′ mixing and of axial current anomalies on various decay processes. We describe the 2γ decays of η and η′, the radiative decays of low-lying vector mesons as well as the decays η → 3π, and in one unified framework, in which they are related to the electromagnetic and strong axial current anomalies, respectively. We also discuss briefly the enhancement of η′ in Ds decays and suggest a possible relation to gluon-mediated processes. The importance of the decays of the glueball candidates f0(1500) and f0(1590) into ηη′ channels is also stressed.