Total branching ratio of the K-two-nucleon absorption in 12C

This work is a critical re-analysis of the results obtained by the AMADEUS collaboration, concerning the measurement of the K− multi-nucleon absorption reactions, on a 12C target, in the Λp final state. We show that a good estimate of the K− two-nucleon absorption total branching ratio can be extrac...

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Detalles Bibliográficos
Autores: Grande, Raffaele del, Piscicchia, Kristian, Cargnelli, Michael, Curceanu, Catalina, Fabbietti, Laura, Marton, Johann, Moskal, Pawol, Ramos Gómez, Àngels, Scordo, Alessandro, Sirghi, Diana Laura, Skurzok, Magdalena, Vázquez Doce, Otton, Wycech, Sławomir, Zmeskal, Johann, De Leo, V., Mandaglio, G., Martini, M., Del Rio, E.P., Selce, A., Silarski, Michal
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/219353
Acceso en línea:https://hdl.handle.net/2445/219353
Access Level:acceso abierto
Palabra clave:Reaccions nuclears
Carbó
Física nuclear
Nuclear reactions
Coal
Nuclear physics
Descripción
Sumario:This work is a critical re-analysis of the results obtained by the AMADEUS collaboration, concerning the measurement of the K− multi-nucleon absorption reactions, on a 12C target, in the Λp final state. We show that a good estimate of the K− two-nucleon absorption total branching ratio can be extracted, given that the measured final state interactions and conversion reactions contain information on almost all the remaining hyperon-nucleon final state combinations. The total branching ratio of the K− two-nucleon absorption in Carbon is found to be (16±3(stat.)+4−5(syst.))%, which is in agreement with recent theoretical predictions. The missing contribution from those few channels for which a Λp pair can not be detected in the final state of the interaction is also estimated

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