Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

Agakishiev, G.; Balanda, Andrzej; Belver, D.; Belyaev, A.; Berger-Chen, J. C.; Blanco, A.; Böhmer, M.; Boyard, J. L.; Cabanelas, P.; Chernenko, S.; Dybczak, Adrian; Epple, E.; Fabbietti, L.; Fateev, O.; Finocchiaro, P.; Fonte, P.; Friese, J.; Fröhlich, I.; Galatyuk, T.; Garzón, J. A.; Gernhäuser, R.; Göbel, K.; Golubeva, M.; González-Díaz, D.; Guber, F.; Gumberidze, M.; Heinz, T.; Hennino, T.; Holzmann, R.; Ierusalimov, A.; Iori, I.; Ivashkin, A.; Jurkovic, M.; Kämpfer, B.; Karavicheva, T.; Koenig, I.; König, I.; Koenig, W.; Kolb, Burkhard W.; Kornakov, G.; König, W.; Kotte, R.; Krása, A.; Krizek, F.; Krücken, R.; Kuc, Hubert; Kühn, W.; Kugler, A.; Kurepin, A.; Ladygin, V.; Lalik, R.; Lang, S.; Lapidus, K.; Lebedev, A.; Liu, T.; Lopes, L.; Lorenz, M.; Maier, L.; Mangiarotti, A.; Markert, J.; Metag, V.; Michalska, Beata; Michel, J.; Müntz, C.; Naumann, L.; Pachmayer, Y. C.; Palka, M.; Pałka, Marek; Parpottas, Y.; Pa\lka, M.; Pechenov, V.; Pechenova, O.; Pietraszko, J.; Przygoda, Witold; Ramstein, B.; Reshetin, A.; Rustamov, A.; Sadovsky, A.; Salabura, Piotr; Schmah, A.; Schwab, E.; Siebenson, J.; Sobolev, Y.-U. G.; Spataro, S.; Spruck, B.; Ströbele, H.; Stroth, J.; Sturm, C.; Tarantola, A.; Teilab, K.; Tlusty, P.; Traxler, M.; Trebacz, Radosław; Tsertos, H.; Vasiliev, T.; Wagner, V.; Weber, M.; Wendisch, C.; Wüstenfeld, J.; Yurevich, S.; Zanevsky, Y.

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Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

Journal article published in 2014 by G. Agakishiev, Andrzej Balanda, D. Belver, A. Belyaev, J. C. Berger-Chen, A. Blanco, M. Böhmer, J. L. Boyard, P. Cabanelas

, S. Chernenko, Adrian Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Finocchiaro and other authors.

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Abstract

We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of $3.5$ GeV based on data measured with HADES. The exclusive channels $pp → npπ^{+}$ and $pp → ppπ^{0}$ as well as $pp → ppe^{+}e^{-}$ are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses $

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Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

Abstract