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Study of dielectron production in C + C collisions at 1 A GeV

Authors :
Krücken, R.
Agakishiev, G.
Agodi, C.
Alvarez-Poll, H.
Bałanda, A.
Bassini, R.
Bellia, G.
Belver, D.
Belyaev, A.
Blanco, A.
Böhmer, M.
Bortolotti, A.
Boyard, J. L.
Braun-Munzinger, P.
Cabanelas, Pablo
Castro, E.
Chernenko, S.
Christ, T.
Destefanis, M.
Diáz, J.
Dohrmann, F.
Dybczak, A.
Eberl, T.
Fabbietti, L.
Fateev, O.
Finocchiaro, P.
Fonte, P.
Friese, J.
Fröhlich, I.
Galatyuk, T.
Garzón, J. A.
Gernhäuser, R.
Gil, A.
Gilardi, C.
Golubeva, M.
González-Díaz, D.
Grosse, E.
Guber, F.
Heilmann, M.
Heinz, T.
Hennino, T.
Holzmann, R.
Ierusalimov, A.
Iori, I.
Ivashkin, A.
Jurkovic, M.
Kämpfer, B.
Kajetanowicz, M.
Kanaki, K.
Karavicheva, T.
Kirschner, D.
Koenig, I.
Koenig, W.
Kolb, B. W.
Kotte, R.
Kozuch, A.
Krása, Antonín
Krizek, F.
Kühn, W.
Kugler, A.
Kurepin, A.
Lamas-Valverde, J.
Lang, S.
Lange, J. S.
Lapidus, K.
Lopes, L.
Maier, L.
Mangiarotti, A.
Marín, J.
Markert, J.
Metag, V.
Michalska, B.
Mishra, D.
Morinière, E.
Mousa, J.
Münch, M.
Müntz, C.
Naumann, L.
Novotny, R.
Otwinowski, J.
Pachmayer, Y. C.
Palka, M.
Parpottas, Yiannis
Pechenov, V.
Pechenova, O.
Pérez Cavalcanti, T.
Pietraszko, J.
Pleskac, R.
Pospísil, V.
Przygoda, W.
Ramstein, B.
Reshetin, A.
Roy-Stephan, M.
Rustamov, A.
Sadovsky, A.
Sailer, B.
Salabura, P.
Schmah, A.
Schroeder, C.
Schwab, E.
Simon, R. S.
Sobolev, Yu G.
Spataro, S.
Spruck, B.
Ströbele, H.
Stroth, J.
Sturm, C.
Sudol, M.
Tarantola, A.
Teilab, K.
Tlusty, P.
Toia, A.
Traxler, M.
Trebacz, R.
Tsertos, Haralambos
Veretenkin, I.
Wagner, V.
Weber, M.
Wen, H.
Wisniowski, M.
Wojcik, T.
Wüstenfeld, J.
Yurevich, S.
Zanevsky, Y.
Zhou, P.
Zumbruch, P.
Tsertos, Haralambos [0000-0001-5966-343X]
Source :
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Phys Lett Sect B Nucl Elem Part High-Energy Phys
Publication Year :
2008

Abstract

The emission of e+ e- pairs from C + C collisions at an incident energy of 1 GeV per nucleon has been investigated. The measured production probabilities, spanning from the π0-Dalitz to the ρ / ω invariant-mass region, display a strong excess above the cocktail of standard hadronic sources. The bombarding-energy dependence of this excess is found to scale like pion production, rather than like eta production. The data are in good agreement with results obtained in the former DLS experiment. © 2008 Elsevier B.V. All rights reserved. 663 1-2 43 48

Subjects

Subjects :
Dilepton spectroscopy
Nuclear Theory
High Energy Physics::Experiment
Nuclear Experiment
DLS puzzle
Excess yield
Excitation function
Heavy-ion reactions

Details

Database :
OpenAIRE
Journal :
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Phys Lett Sect B Nucl Elem Part High-Energy Phys
Accession number :
edsair.od......4485..ed02df9e6188d5fccafc04e8bc13322f

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