Measurement of the quasi free np → npπ + π - and np → ppπ - π 0 reactions at 1.25 GeV with HADES
Date
2014Author
Kurilkin, A.Arnold, O.
Atomssa, E. T.
Behnke, C.
Belyaev, A.
Berger-Chen, J. C.
Biernat, J.
Blanco, A.
Blume, C.
Böhmer, M.
Bordalo, P.
Chernenko, S.
Deveaux, C.
Dybczak, A.
Epple, E.
Fabbietti, L.
Fateev, O.
Fonte, P.
Franco, C.
Friese, J.
Fröhlich, I.
Galatyuk, T.
Garzón, J. A.
Gill, K.
Golubeva, M.
González-Díaz, D.
Guber, F.
Gumberidze, M.
Harabasz, S.
Hennino, T.
Höhne, C.
Holzmann, R.
Ierusalimov, A.
Ivashkin, A.
Jurkovic, M.
Kämpfer, B.
Karavicheva, T.
Kardan, K.
Koenig, I.
Koenig, W.
Kolb, B. W.
Korcyl, G.
Kornakov, G.
Kotte, R.
Krása, Antonín
Krebs, E.
Krizek, F.
Kuc, H.
Kugler, A.
Kunz, T.
Kurepin, A.
Kurilkin, P.
Ladygin, V.
Lalik, R.
Lang, S.
Lapidus, K.
Lebedev, A.
Lopes, L.
Lorenz, M.
Maier, L.
Mangiarotti, A.
Markert, J.
Metag, V.
Michel, J.
Müntz, C.
Münzer, R.
Naumann, L.
Palka, M.
Pechenov, V.
Pechenova, O.
Petousis, Vlassis
Pietraszko, J.
Przygoda, W.
Ramstein, B.
Rehnisch, L.
Reshetin, A.
Rost, A.
Rustamov, A.
Sadovsky, A.
Salabura, P.
Scheib, T.
Schmidt-Sommerfeld, K.
Schuldes, H.
Sellheim, P.
Siebenson, J.
Silva, L.
Sobolev, Y. G.
Spataro, S.
Ströbele, H.
Stroth, J.
Strzempek, P.
Sturm, C.
Svoboda, O.
Tarantola, A.
Teilab, K.
Tlusty, P.
Traxler, M.
Tsertos, Haralambos
Vasiliev, T.
Wagner, V.
Wendisch, C.
Wirth, J.
Wüstenfeld, J.
Yurevich, S.
Zanevsky, Y.
Publisher
EDP SciencesSource
EPJ Web of Conferences13th International Workshop on Meson Production, Properties and Interaction, MESON 2014
Volume
81Google Scholar check
Metadata
Show full item recordAbstract
We present the results of two-pion production in tagged quasi-free np collisions at a deutron incident beam energy of 1.25 GeV/c measured with the High-Acceptance Di-Electron Spectrometer (HADES) installed at GSI. The specific acceptance of HADES allowed for the first time to obtain high-precision data on π+π- and π-π0 production in np collisions in a region corresponding to large transverse momenta of the secondary particles. The obtained differential cross section data provide strong constraints on the production mechanisms and on the various baryon resonance contributions (N(1440), N(1520), ? (1600)). The invariant mass and angular distributions from the np → npπ+π -and np → ppπ-π0 reactions are compared with different theoretical model predictions. © Owned by the authors, published by EDP Sciences, 2014.