A first prediction of the electromagnetic rare decays η'→π0γγ and η'→ηγγ
The branching ratio and the invariant mass spectrum of the η0 → π0γγ and η0 → ηγγ electromagnetic rare decays are determined within the frameworks of the Linear Sigma Model and Vector Meson Dominance for the corresponding scalar and vector meson exchange contributions. The measured η → π0γγ process...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:301602 |
| Acceso en línea: | https://ddd.uab.cat/record/301602 https://dx.doi.org/urn:doi:10.22323/1.171.0115 |
| Access Level: | acceso abierto |
| Palabra clave: | Hep-ph Hep-ex Nucl-th |
| Sumario: | The branching ratio and the invariant mass spectrum of the η0 → π0γγ and η0 → ηγγ electromagnetic rare decays are determined within the frameworks of the Linear Sigma Model and Vector Meson Dominance for the corresponding scalar and vector meson exchange contributions. The measured η → π0γγ process serves as a test of our approach while the non yet measured η0 → (π0,η)γγ reactions are predicted for the first time. Our prediction for the η → π0γγ decay agrees with recent experimental reported values, thus supporting the validity of our framework. Therefore, our predictions for the η0 → π0γγ and η0 → ηγγ decays should be taken as a first indication of the possible values of the associated branching ratios. We hope these predictions to be interesting and useful for experiments such as KLOE-2, Crystal Ball, WASA, and BES-III where these processes are expected to be measured in the next future. |
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