Inclusive e+e- pair production in p+p and p+Nb collisions at Ekin = 3.5 GeV
Date
2011Author
Krücken, R.Weber, M.
Agakishiev, G.
Belver, D.
Belyaev, A.
Blanco, A.
Böhmer, M.
Cabanelas, Pablo
Chernenko, S.
Dybczak, A.
Epple, E.
Fabbietti, L.
Fateev, O.
Finocchiaro, P.
Fonte, P.
Friese, J.
Fröhlich, I.
Galatyuk, T.
Garzón, J. A.
Golubeva, M.
González-Díaz, D.
Guber, F.
Gumberidze, M.
Hennino, T.
Holzmann, R.
Huck, P.
Ierusalimov, A.
Ivashkin, A.
Jurkovic, M.
Kämpfer, B.
Karavicheva, T.
Koenig, I.
Koenig, W.
Kolb, B. W.
Korcyl, G.
Kornakov, G.
Kotte, R.
Kozuch, A.
Krása, Antonín
Krizek, F.
Kuc, H.
Kühn, W.
Kugler, A.
Kurepin, A.
Kurilkin, A.
Kurilkin, P.
Ladygin, V.
Lang, S.
Lapidus, K.
Liu, T.
Lopes, L.
Lorenz, M.
Maier, L.
Mangiarotti, A.
Markert, J.
Metag, V.
Michalska, B.
Michel, J.
Müntz, C.
Naumann, L.
Pachmayer, Y. C.
Palka, M.
Parpottas, Yiannis
Pechenov, V.
Pechenova, O.
Pietraszko, J.
Przygoda, W.
Ramstein, B.
Reshetin, A.
Rustamov, A.
Sadovsky, A.
Salabura, P.
Schmah, A.
Siebenson, J.
Sobolev, Yu G.
Spataro, S.
Ströbele, H.
Stroth, J.
Sturm, C.
Tarantola, A.
Teilab, K.
Tlusty, P.
Traxler, M.
Trebacz, R.
Tsertos, Haralambos
Vasiliev, T.
Wagner, V.
Weber, M.
Wüstenfeld, J.
Yurevich, S.
Zanevsky, Y.
ISSN
1742-6588Source
27th Winter Workshop on Nuclear Dynamics, WWND 2011Volume
316Issue
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We report on recent data of e+e- pair emission in proton nucleus collisions at energies above the light vector meson production thresholds. Invariant mass distributions for the p+Nb system at Ekin = 3.5 GeV are compared to data from elementary p+p reactions at the same beam energy. We observe a constant π0/ω yield ratio for both systems but an excess in the mass region above the π0 mass. Furthermore we present here the normalization procedure that was applied to p+Nb collisions by measuring the production of negative pions in the HADES acceptance.