Momentum dependence of the phi-meson nuclear transparency

The production of φ mesons in proton collisions with C, Cu, Ag, and Au targets has been studied via the φ → K + K − decay at an incident beam energy of 2.83 GeV using the ANKE detector system at COSY. For the first time, the momentum dependence of the nuclear transparency ratio, the in-medium φ widt...

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Detalles Bibliográficos
Autores: Hartmann, M., Kiselev, Yu. T., Polyanskiy, A., Paryev, E. Ya., Büscher, M., Chiladze, D., Dymov, S., Dzyuba, A., Gebel, R., Hejny, V., Kämpfer, B., Keshelashvili, I., Koptev, V., Lorentz, B., Maeda, Y., Magas, Volodymyr, Merzliakov, S., Mikirtytchiants, S., Nekipelov, M., Ohm, H.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/50635
Acceso en línea:https://hdl.handle.net/2445/50635
Access Level:acceso abierto
Palabra clave:Física nuclear
Col·lisions (Física nuclear)
Partícules (Física nuclear)
Hadrons
Nuclear physics
Collisions (Nuclear physics)
Particles (Nuclear physics)
Descripción
Sumario:The production of φ mesons in proton collisions with C, Cu, Ag, and Au targets has been studied via the φ → K + K − decay at an incident beam energy of 2.83 GeV using the ANKE detector system at COSY. For the first time, the momentum dependence of the nuclear transparency ratio, the in-medium φ width, and the differential cross section for φ -meson production at forward angles have been determined for these targets over the momentum range of 0.6-1.6 GeV /c. There are indications of a significant momentum dependence in the value of the extracted φ width, which corresponds to an effective φN absorption cross section in the range of 14-21 mb.

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