/ Experiment-Nucl arXiv:0809.2764

Meson and di-electron production with HADES

Frohlich, I. (Frankfurt U.) ; Agakishiev, G. (Giessen U., Inst. Kernphys.) ; Agodi, C. (INFN, LNS) ; Balanda, A. (PWSZ, Chelm) ; Bellia, G. (Catania U.) ; Belver, D. (Santiago de Compostela U.) ; Belyaev, A. (Dubna, JINR) ; Blanco, A. (LIP, Coimbra) ; Bohmer, M. (Munich, Tech. U.) ; Boyard, J.L. (Orsay, IPN) ; Braun-Munzinger, P. (Darmstadt, GSI) ; Cabanelas, P. ; Castro, E. (Santiago de Compostela U.) ; Chernenko, S. (Dubna, JINR) ; Christ, T. (Munich, Tech. U.) ; Destefanis, M. (Giessen U., Inst. Kernphys.) ; Diaz, J. (Valencia U.) ; Dohrmann, F. (Forschungszentrum Dresden Rossendorf) ; Dybczak, A. (Jagiellonian U.) ; Eberl, T. (Munich, Tech. U.) ; Fabbietti, L. (Munich, Tech. U.) ; Fateev, O. (Dubna, JINR) ; Finocchiaro, P. (INFN, LNS) ; Fonte, P. (Coimbra Inst. Sup. Eng.) ; Friese, J. (Munich, Tech. U.) ; Galatyuk, T. (Darmstadt, GSI) ; Garzon, J.A. (Santiago de Compostela U.) ; Gernhauser, R. (Munich, Tech. U.) ; Gil, A. (Valencia U.) ; Gilardi, C. (Giessen U., Inst. Kernphys.) ; Golubeva, M. (Moscow, INR) ; Gonzalez-Diaz, D. (Darmstadt, GSI) ; Grosse, E. (Dresden, Tech. U.) ; Guber, F. (Moscow, INR) ; Heilmann, M. (Frankfurt U.) ; Hennino, T. (Orsay, IPN) ; Holzmann, R. (Darmstadt, GSI) ; Ierusalimov, A. (Dubna, JINR) ; Iori, I. (Milan U.) ; Ivashkin, A. (Moscow, INR) ; Jurkovic, M. (Munich, Tech. U.) ; Kampfer, B. (Forschungszentrum Dresden Rossendorf) ; Kanaki, K. (Forschungszentrum Dresden Rossendorf) ; Karavicheva, T. (Moscow, INR) ; Kirschner, D. (Giessen U., Inst. Kernphys.) ; Koenig, I. (Darmstadt, GSI) ; Koenig, W. (Darmstadt, GSI) ; Kolb, B.W. (Darmstadt, GSI) ; Kotte, R. (Forschungszentrum Dresden Rossendorf) ; Kozuch, A. (PWSZ, Chelm) ; Krasa, A. (Rez, Nucl. Phys. Inst.) ; Krizek, F. (Rez, Nucl. Phys. Inst.) ; Krucken, R. (Munich, Tech. U.) ; Kuhn, W. (Giessen U., Inst. Kernphys.) ; Kugler, A. (Rez, Nucl. Phys. Inst.) ; Kurepin, A. (Moscow, INR) ; Lamas-Valverde, J. (Santiago de Compostela U.) ; Lang, S. (Darmstadt, GSI) ; Lange, J.S. (Giessen U., Inst. Kernphys.) ; Lapidus, K. (Moscow, INR) ; Lopes, L. (Coimbra Inst. Sup. Eng.) ; Maier, L. (Munich, Tech. U.) ; Mangiarotti, A. (Coimbra Inst. Sup. Eng.) ; Marin, J. (Santiago de Compostela U.) ; Markert, J. (Frankfurt U.) ; Metag, V. (Giessen U., Inst. Kernphys.) ; Michalska, B. (Jagiellonian U.) ; Michel, J. (Frankfurt U.) ; Mishra, D. (Giessen U., Inst. Kernphys.) ; Moriniere, E. (Orsay, IPN) ; Mousa, J. (Cyprus U.) ; Muntz, C. (Frankfurt U.) ; Naumann, L. (Forschungszentrum Dresden Rossendorf) ; Novotny, R. (Giessen U., Inst. Kernphys.) ; Otwinowski, J. (Jagiellonian U.) ; Pachmayer, Y.C. (Frankfurt U.) ; Palka, M. (Darmstadt, GSI) ; Parpottas, Y. (Cyprus U.) ; Pechenov, V. (Giessen U., Inst. Kernphys.) ; Pechenova, O. (Giessen U., Inst. Kernphys.) ; Perez Cavalcanti, T. (Giessen U., Inst. Kernphys.) ; Pietraszko, J. (Darmstadt, GSI) ; Przygoda, W. (PWSZ, Chelm) ; Ramstein, B. (Orsay, IPN) ; Reshetin, A. (Moscow, INR) ; Roy-Stephan, M. (Orsay, IPN) ; Rustamov, A. (Darmstadt, GSI) ; Sadovsky, A. (Moscow, INR) ; Sailer, B. (Munich, Tech. U.) ; Salabura, P. (Jagiellonian U.) ; Schmah, A. (Darmstadt, GSI) ; Simon, R. (Darmstadt, GSI) ; Spataro, S. (Giessen U., Inst. Kernphys.) ; Spruck, B. (Giessen U., Inst. Kernphys.) ; Strobele, H. (Frankfurt U.) ; Stroth, J. (Darmstadt, GSI) ; Sturm, C. (Frankfurt U.) ; Sudol, M. (Darmstadt, GSI) ; Tarantola, A. (Frankfurt U.) ; Teilab, K. (Frankfurt U.) ; Tlusty, P. (Rez, Nucl. Phys. Inst.) ; Traxler, M. (Darmstadt, GSI) ; Trebacz, R. (Jagiellonian U.) ; Tsertos, H. (Cyprus U.) ; Veretenkin, I. (Moscow, INR) ; Wagner, V. (Rez, Nucl. Phys. Inst.) ; Wen, H. (Giessen U., Inst. Kernphys.) ; Wisniowski, M. (Jagiellonian U.) ; Wojcik, T. (Jagiellonian U.) ; Wustenfeld, J. (Forschungszentrum Dresden Rossendorf) ; Yurevich, S. (Darmstadt, GSI) ; Zanevsky, Y. (Dubna, JINR) ; Zhou, P. (Forschungszentrum Dresden Rossendorf) ; Zumbruch, P. (Darmstadt, GSI)

Published in: Int.J.Mod.Phys.
Year: 2009
Vol.: A24
Page No: 317-326
Pages: 10

Abstract: The HADES experiment, installed at GSI, Darmstadt, measures di-electron production in A+A, p/pi+N and p/pi+A collisions. Here, the pi0 and eta Dalitz decays have been reconstructed 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.

Keyword(s): Mesons ; di-electrons ; resonances ; dense matter

Web-Page: http://inspirebeta.net/record/796764/files/PLB_fig2.png; http://inspirebeta.net/record/796764/files/helicity_all.png; http://inspirebeta.net/record/796764/files/minvee_all.png; http://inspirebeta.net/record/796764/files/nov02_newpluto_cocktail.png; http://inspirebeta.net/record/796764/files/pp3.5.png; http://inspirebeta.net/record/796764/files/ratio_withoutcocktailB.png

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