Meson and di-electron production with hades

I. Fröhlich, G. Agakishiev, C. Agodi, A. Balanda, G. Bellia, D. Belver, A. Belyaev, A. Blanco, M. BÖhmer, J. L. Boyard, P. Braun-Munzinger, P. Cabanelas, E. Castro, S. Chernenko, T. Christ, M. Destefanis, J. DÍaz, F. Dohrmann, A. Dybczak, T. EberlL. Fabbietti, O. Fateev, P. Finocchiaro, P. Fonte, J. Friese, T. Galatyuk, J. A. GarzÓn, R. GernhÄuser, A. Gil, C. Gilardi, M. Golubeva, D. GonzÁlez-DÍaz, E. Grosse, F. Guber, M. Heilmann, T. Hennino, R. Holzmann, A. Ierusalimov, I. Iori, A. Ivashkin, M. Jurkovic, B. KÄmpfer, K. Kanaki, T. Karavicheva, D. Kirschner, I. Koenig, W. Koenig, B. W. Kolb, R. Kotte, A. Kozuch, A. KrÁsa, F. Krizek, R. KrÜcken, W. KÜhn, A. Kugler, A. Kurepin, J. Lamas-Valverde, S. Lang, J. S. Lange, K. Lapidus, L. Lopes, L. Maier, A. Mangiarotti, J. MarÍn, J. Markert, V. Metag, B. Michalska, J. Michel, D. Mishra, E. MoriniÈre, J. Mousa, C. MÜntz, L. Naumann, R. Novotny, J. Otwinowski, Y. C. Pachmayer, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, T. Pérez Cavalcanti, J. Pietraszko, W. Przygoda, B. Ramstein, A. Reshetin, M. Roy-Stephan, A. Rustamov, A. Sadovsky, B. Sailer, P. Salabura, A. Schmah, R. Simon, Yu G. Sobolev, S. Spataro, B. Spruck, H. StrÖbele, J. Stroth, C. Sturm, M. Sudol, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, R. Trebacz, H. Tsertos, I. Veretenkin, V. Wagner, H. Wen, M. Wisniowski, T. Wojcik, J. WÜstenfeld, S. Yurevich, Y. Zanevsky, P. Zhou, P. Zumbruch

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4 Scopus citations

Abstract

The HADES experiment, installed at GSI, Darmstadt, measures di-electron production in A + A, p/π + N and p/π + A collisions. Here, the π0 and η Dalitz decays have been reconstruced in the exclusive p + p reaction at 2.2 GeV to form a reference cocktail for long-lived di-electron sources. In the C+C reaction at 1 and 2 GeV/u, these long-lived sources have been subtracted from the measured inclusive e+e - yield to exhibit the signal from the early phase of the collision. The results suggest that resonances play an important role in dense nuclear matter.

Original languageEnglish
Pages (from-to)317-326
Number of pages10
JournalInternational Journal of Modern Physics A
Volume24
Issue number2-3
DOIs
StatePublished - 30 Jan 2009

Keywords

  • Dense matter
  • Di-electrons
  • Mesons
  • Resonances

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