A simple π-η-gh′ mixing model for and
| Autor: | Carles Ayala, Ll. Ametller, Albert Bramon |
|---|---|
| Rok vydání: | 1984 |
| Předmět: | |
| Zdroj: | Physics Letters B. 141:414-418 |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/0370-2693(84)90275-2 |
| Popis: | A joint description of the ratios r ≡ Γ(ψ → η′γ) Γ(ψ → ηγ) and R ≡ Γ(ψ′ → ψ π) Γ(ψ′ → ψη) is achieved in the context of a simple π-η-gh′ mixing model. An η-η′ mixing angle θ ⋍ − 19.5° and a large tadpole effect for the ηπ and η′π isospinviolating transitions are required. Both requirements are in agreement with recent data for the η-meson. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|