Journal article
Authors list: Agakichiev, G.; Agodi, C.; Alvarez-Pol, H.; Balanda, A.; Bertini, D.; Bielcik, J.; Bellia, G.; Bohmer, M.; Bokemeyer, H.; Boyard, J. L.; Braun-Munzinger, P.; Cabanelas, P.; Chernenko, S.; Christ, T.; Coniglione, R.; Cosentino, L.; Diaz, J.; Dohrmann, F.; Duran, I.; Eberl, T.; Enghardt, W.; Fabbietti, L.; Fateev, O.; Fernandez, C.; Finocchiaro, P.; Friese, J.; Froehlich, I.; Fuentes, B.; Garabatos, C.; Garzon, J. A.; Gernhaeuser, R.; Gilardi, C.; Golubeva, M.; Gonzalez-Diaz, D.; Grosse, E.; Guber, F.; Hennino, T.; Hlavac, S.; Holzmann, R.; Homolka, J.; Ierusalimov, A.; Iori, I.; Ivashkin, A.; Jaskula, M.; Jurkovic, M.; Kagarlis, M.; Kajetanowicz, M.; Kaempfer, B.; Kanaki, K.; Karavicheva, T.; Kastenmueller, A.; Kidon, L.; Kienle, P.; Koenig, I.; Koenig, W.; Koerner, H. J.; Kolb, B. W.; Kotte, R.; Kruecken, R.; Kugler, A.; Kuehn, W.; Kulessa, R.; Kurepin, A.; Lang, S.; Lange, S.; Lehnert, J.; Lins, E.; Magestro, D.; Maiolino, C.; Malarz, A.; Markert, J.; Metag, V.; Mousa, J.; Muench, M.; Muentz, C.; Naumann, L.; Nekhaev, A.; Novotny, J.; Otwinowski, J.; Pachmayer, Y. C.; Pechenov, V.; Perez, T.; Piattelli, P.; Pietraszko, J.; Pleskac, R.; Ploskon, M.; Pospisil, V.; Prokopowicz, W.; Przygoda, W.; Ramstein, B.; Reshetin, A.; Ritman, J.; Roy-Stephan, M.; Rustamov, A.; Sadovsky, A.; Sailer, B.; Salabura, P.; Sanchez, M.; Sapienza, P.; Schmah, A.; Schoen, H.; Schoen, W.; Schroeder, C.; Schwab, E.; Simon, R. S.; Smolyankin, V.; Smykov, L.; Spataro, S.; Spruck, B.; Stroebele, H.; Stroth, J.; Sturm, C.; Sudol, M.; Suk, M.; Taranenko, A.; Tlusty, P.; Toia, A.; Traxler, M.; Tsertos, H.; VassilieV, D.; Vazquez, A.; Wagner, V.; Walus, W.; Wisniowski, M.; Wojcik, T.; Wuestenfeld, J.; Zanevsky, Y.; Zeitelhack, K.; Zovinec, D.; Zumbruch, P.
Publication year: 2007
Journal: Physical Review Letters
Volume number: 98
Issue number: 5
ISSN: 0031-9007
eISSN: 1079-7114
Open access status: Green
DOI Link: https://doi.org/10.1103/PhysRevLett.98.052302
Publisher: American Physical Society
Abstract:
The invariant-mass spectrum of e(+) e(-) pairs produced in C-12 + C-12 collisions at an incident energy of 2 GeV per nucleon has been measured for the first time. The measured pair production probabilities span over 5 orders of magnitude from the pi(0)-Dalitz to the rho/omega invariant-mass region. Dalitz decays of pi(0) and eta account for all the yield up to 0.15 GeV/c(2), but for only about 50% above this mass. A comparison with model calculations shows that the excess pair yield is likely due to baryon-resonance and vector-meson decays. Transport calculations based on vacuum spectral functions fail, however, to describe the entire mass region.
Citation Styles
Harvard Citation style: Agakichiev, G., Agodi, C., Alvarez-Pol, H., Balanda, A., Bertini, D., Bielcik, J., et al. (2007) Dielectron production in 12C+12C collisions at 2A GeV with the HADES spectrometer, Physical Review Letters, 98(5), Article 052302. https://doi.org/10.1103/PhysRevLett.98.052302
APA Citation style: Agakichiev, G., Agodi, C., Alvarez-Pol, H., Balanda, A., Bertini, D., Bielcik, J., Bellia, G., Bohmer, M., Bokemeyer, H., Boyard, J., Braun-Munzinger, P., Cabanelas, P., Chernenko, S., Christ, T., Coniglione, R., Cosentino, L., Diaz, J., Dohrmann, F., Duran, I., ...Zumbruch, P. (2007). Dielectron production in 12C+12C collisions at 2A GeV with the HADES spectrometer. Physical Review Letters. 98(5), Article 052302. https://doi.org/10.1103/PhysRevLett.98.052302
Keywords
DILEPTON PRODUCTION; HEAVY-ION COLLISIONS; NUCLEAR-MATTER; PI(0); RHO-MESON
