phi meson width in the medium from proton induced phi production in nuclei
We perform calculations for the production of φ mesons in nuclei at energies just above threshold and study the A dependence of the cross section. We use results for the φ self-energy in the medium obtained within a chiral unitary approach. We find a strong A dependence which is tied to the distorti...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/12217 |
| Acceso en línea: | https://hdl.handle.net/2445/12217 |
| Access Level: | acceso abierto |
| Palabra clave: | Mesons (Física nuclear) Reaccions nuclears Mesons Nuclear reactions |
| Sumario: | We perform calculations for the production of φ mesons in nuclei at energies just above threshold and study the A dependence of the cross section. We use results for the φ self-energy in the medium obtained within a chiral unitary approach. We find a strong A dependence which is tied to the distortion of the incident proton and to the absorption of the φ on its way out of the nucleus. The effect of this latter process reduces the cross section by about a factor of 2 in heavy nuclei, proving that the A dependence of the cross section bears valuable information on the φ width in the nuclear medium. Calculations are done for energies accessible in an experimental facility like COSY |
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