Year: 2009
Type: article
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.
Authors: 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. EBERL, L. 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
Institutions: Goethe University Frankfurt, Justus-Liebig-Universität Gießen, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Jagiellonian University, Universidade de Santiago de Compostela, Joint Institute for Nuclear Research, LIP - Laboratory of Instrumentation and Experimental Particle Physics, Technical University of Munich, Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et de Physique des Particules, Institut de Physique Nucléaire d’Orsay, Consejo Superior de Investigaciones Científicas, Universitat de València, Instituto de Física Corpuscular, Helmholtz-Zentrum Dresden-Rossendorf, Russian Academy of Sciences, Institute for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Czech Academy of Sciences, Czech Academy of Sciences, Nuclear Physics Institute, University of Cyprus
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2247907372