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

T. Liu, G. Agakishiev, C. Agodi, A. Balanda, G. Bellia, D. Belver, A. Belyaev, A. Blanco, M. Böhmer, J. L. Boyard, P. Braun-Munzinger, P. Cabanelas, E. Castro, T. Christ, M. Destefanis, J. Díaz, F. Dohrmann, A. Dybczak, L. Fabbietti, O. FateevP. Finocchiaro, P. Fonte, J. Friese, I. Fröhlich, T. Galatyuk, J. A. Garzón, R. Gernhäuser, A. Gil, C. Gilardi, M. Golubeva, D. González-Díaz, E. Grosse, F. Guber, M. Heilmann, T. Hennino, R. Holzmann, A. Ierusalimov, I. Iori, A. Ivashkin, M. Jurkovic, B. Kämpfer, K. Kanaki, T. Karavicheva, D. Kirschner, I. Koenig, W. Koenig, B. W. Kolb, R. Kotte, A. Kozuch, A. Krása, F. Křížek, R. Krücken, W. Kühn, A. Kugler, A. Kurepin, J. Lamas-Valverde, S. Lang, J. S. Lange, K. Lapidus, L. Lopes, M. Lorenz, L. Maier, A. Mangiarotti, J. Marín, J. Marker, V. Metag, B. Michalska, J. Michel, D. Mishra, E. Morinière, J. Mousa, C. Müntz, L. Naumann, R. Novotny, J. Otwinowski, Y. C. Pachmayer, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, T. Pérez Cavalcanti, J. Pietraszko, W. Przygoda, B. Ramstein, A. Reshetin, A. Rustamov, A. Sadovsky, P. Salabura, A. Schma, R. Simon, Yu G. Sobolev, S. Spataro, B. Spruck, H. Ströbele, J. Stroth, C. Sturm, M. Sudol, A. Tarantola, K. Teilab, P. Tlustý, M. Traxler, R. Trebacz, H. Tsertos, I. Veretenkin, V. Wagner, M. Weber, M. Wisniowski, J. Wüstenfeld, S. Yurevich, Y. V. Zanevsky, P. Zhou, P. Zumbruch

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

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.

OriginalspracheEnglisch
TitelProceedings of the 12th International Conference on Nuclear Reaction Mechanisms, NRM 2009
Herausgeber (Verlag)CERN
Seiten423-429
Seitenumfang7
ISBN (Print)9789290833413
PublikationsstatusVeröffentlicht - 2010
Veranstaltung2009 12th International Conference on Nuclear Reaction Mechanisms, NRM 2009 - Varenna, Italien
Dauer: 15 Juni 200919 Juni 2009

Publikationsreihe

NameCERN-Proceedings
Band2
ISSN (Print)2078-8835

Konferenz

Konferenz2009 12th International Conference on Nuclear Reaction Mechanisms, NRM 2009
Land/GebietItalien
OrtVarenna
Zeitraum15/06/0919/06/09

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