par Frère, Jean-Marie 
Référence Surveys in high energy physics, 10, 1-4, page (313-325)
Publication Publié, 1997
Référence Surveys in high energy physics, 10, 1-4, page (313-325)
Publication Publié, 1997
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, J/Ψ→η and J/Ψ-η′γ and discuss briefly the enhancement of η′ in Ds decays, suggesting an explanation in terms of gluon-mediated processes. The importance of the decays of the glueballs into ηη′ channels is stressed, in particular in connection with the candidates f0(1500) and f0(1590). |
