pp collisions at 2.2GeV with HADES

Spataro, STEFANO GIOVANNI; Agakishiev, G.; Agodi, C.; Alvarez Pol, H.; Balanda, A.; Bellia, G.; Bielcik, J.; Böhmer, M.; Boyard, J. L.; Braun Munzinger, P.; Chernenko, S.; Christ, T.; Coniglione, R.; Djeridi, R.; Dohrmann, F.; Durán, I.; Eberl, T.; Fabbietti, L.; Fateev, O.; Finocchiaro, P.; Friese, J.; Fröhlich, I.; Garzón, J. A.; Gernhäuser, R.; Golubeva, M.; González Díaz, D.; Grosse, E.; Guber, F.; Hennino, T.; Hlavac, S.; Holzmann, R.; Ierusalimov, A.; Iori, I.; Jaskula, M.; Jurkovic, M.; Kämpfer, B.; Kanaki, K.; Karavicheva, T.; Koenig, I.; Koenig, W.; Kolb, B. W.; Kotte, R.; Kotulic Bunta, J.; Krücken, R.; Kugler, A.; Kühn, W.; Kulessa, R.; Kurepin, A.; Lang, S.; Lehnert, J.; Maiolino, C.; Markert, J.; Metag, V.; Mousa, J.; Münch, M.; Müntz, C.; Naumann, L.; Novotny, R.; Novotny, J.; Otwinowski, J.; Pachmayer, Y. C.; Pant, L. M.; Pechenov, V.; Pérez, T.; Pietraszko, J.; Pleskac, R.; Pospísil, V.; Przygoda, W.; Rabin, N.; Ramstein, B.; Reshetin, A.; Ritman, J.; Roy Stephan, M.; Rustamov, A.; Sadovsky, A.; Sailer, B.; Salabura, P.; Sánchez, M.; Sapienza, P.; Schmah, A.; Simon, R.; Smolyankin, V.; Smykov, L.; Spruck, B.; Stroebele, H.; Stroth, J.; Sturm, C.; Sudol, M.; Tlusty, P.; Toia, A.; Traxler, M.; Tsertos, H.; Wagner, V.; Wisniowski, M.; Wojcik, T.; Wüstenfeld, J.; Zanevsky, Y.; Zovinec, D.; Zumbruch, P.

HADES is a second generation experiment designed to study dielectron production in proton, pion and heavy ion induced reactions at the GSI accelerator facility in Darmstadt. During the first pp production run the HADES spectrometer was equipped with an almost complete outer tracking system. The main goal of this experiment was to collect data to identify the pp->ppη reaction channel via exclusive reconstruction of the hadronic and dielectron decay channel, in order to provide a reference for dielectrons measured by HADES in C+C collisions at similar energies. Furthermore, pp elastic scattering channel was selected for systematic studies of the high resolution tracking system recently installed in the spectrometer. We present the status of HADES high resolution tracking reconstruction on example of pp elastic scattering reconstruction. We show the particle identification capability of the spectrometer, and exclusive channel reconstruction for four charged particle events.