Study of the pp → npπ+ reaction at 1.25 GeV with HADES

Autor: Krücken, R., Liu, T., Agakishiev, G., Agodi, C., Bałanda, A., Bellia, G., Belver, D., Belyaev, A., Blanco, A., Böhmer, M., Boyard, J. L., Braun-Munzinger, P., Cabanelas, Pablo, Castro, E., Christ, T., Destefanis, M., Diáz, J., Dohrmann, F., Dybczak, A., Fabbietti, L., Fateev, O., Finocchiaro, P., Fonte, P., Friese, J., Fröhlich, I., Galatyuk, T., Garzón, J. A., Gernhäuser, R., Gil, A., Gilardi, C., Golubeva, M., González-Díaz, D., Grosse, E., Guber, F., Heilmann, M., Hennino, T., Holzmann, R., Ierusalimov, A., Iori, I., Ivashkin, A., Jurkovic, M., Kämpfer, B., Kanaki, K., Karavicheva, T., Kirschner, D., Koenig, I., Koenig, W., Kolb, B. W., Kotte, R., Kozuch, A., Krása, Antonín, Křížek, F., Kühn, W., Kugler, A., Kurepin, A., Lamas-Valverde, J., Lang, S., Lange, J. S., Lapidus, K., Lopes, L., Lorenz, M., Maier, L., Mangiarotti, A., Marín, J., Marker, J., Metag, V., Michalska, B., Michel, J., Mishra, D., Morinière, E., Mousa, J., Müntz, C., Naumann, L., Novotny, R., Otwinowski, J., Pachmayer, Y. C., Palka, M., Parpottas, Yiannis, Pechenov, V., Pechenova, O., Pérez Cavalcanti, T., Pietraszko, J., Przygoda, W., Ramstein, B., Reshetin, A., Rustamov, A., Sadovsky, A., Salabura, P., Schma, A., Simon, R., Sobolev, Yu G., Spataro, S., Spruck, B., Ströbele, H., Stroth, J., Sturm, C., Sudol, M., Tarantola, A., Teilab, K., Tlustý, P., Traxler, M., Trebacz, R., Tsertos, Haralambos, Veretenkin, I., Wagner, V., Weber, M., Wisniowski, M., Wüstenfeld, J., Yurevich, S., Zanevsky, Y. V., Zhou, P., Zumbruch, P.
Přispěvatelé: Tsertos, Haralambos [0000-0001-5966-343X]
Rok vydání: 2010
Předmět:
Zdroj: CERN-Proceedings
2009 12th International Conference on Nuclear Reaction Mechanisms, NRM 2009
Popis: In pp collisions at 1.25 GeV kinetic energy, the HADES collaboration aimed at investigating the di-electron production related to Δ (1232) Dalitz decay (Δ+ → pe+e-). In order to constrain the models predicting the cross section and the production mechanisms of A resonance, the hadronic channels have been measured and studied in parallel to the leptonic channels. The analyses of pp → npπ+ and pp → ppπ0 channels and the comparison to simulations are presented in this contribution, in particular the angular distributions being sensitive to Δ production and decay. The accurate acceptance corrections have been performed as well, which could be tested in all the phase space region thanks to the high statistic data. These analyses result in an overall agreement with the one-π exchange model and previous data. 2 423 429 Sponsors: Conference code: 103418
Databáze: OpenAIRE
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