Dilepton analysis in the HADES spectrometer for C+C at 2 A GeV
Date
2005Author
Krücken, R.Bielčík, Jaroslav
Agakishiev, G.
Agodi, C.
Alvarez-Poll, H.
Bałanda, A.
Bellia, G.
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-Daz, 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.
Kottel, R.
Kotulic-Bunta, J.
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.
Spataro, S.
Spruck, B.
Stroebele, H.
Stroth, J.
Sturm, C.
Sudol, M.
Tlusty, P.
Toia, A.
Traxler, M.
Tsertos, Haralambos
Wagner, V.
Wisniowski, M.
Wojcik, T.
Wüstenfeld, J.
Zanevsky, Y.
Zovinec, D.
Zumbruch, P.
Source
Journal of Physics G: Nuclear and Particle PhysicsVolume
31Issue
4Pages
S231-S237Google Scholar check
Metadata
Show full item recordAbstract
The high-acceptance dielectron spectrometer (HADES) has become operational at GSI Darmstadt. The primary physics programme is to study in-medium changes of light vector mesons via their e+e- decays. The methods of dilepton signal reconstruction in the HADES spectrometer and preliminary dilepton spectra for C+C reactions at 2 A GeV are presented. In the signal reconstruction, particularly important is the reduction of the huge combinatorial background arising from e+e- combinations of leptons from gamma conversion in materials with other leptons in the collision. The purity of the dilepton signal is determined by using GEANT simulations with the full HADES geometry and a realistic detector response. © 2005 IOP Publishing Ltd.