| Popis: |
We consider the mixing of η-η'-ι pseudoscalar mesons, assuming that the last one is mainly a glueball (we identify ι with η(1490)). Starting from a mass matrix given by the quark model, with chiral corrections taken into account, and experimental data on ι→2γ decay we obtain that the admixture of the glueball state in η' is less than 8%. Our model gives a good agreement when compared with the experimental data for electromagnetic decays of mesons. We also present the results for P→2γ and ι→ϱγ decays, which do not depend on mixing. |
