Recent results from Pb - Au collisions at 158 GeV/c per nucleon obtained with the CERES spectrometer

During the 1996 lead run time, CERES has accumulated 42 million events, corresponding to a factor of 5 more statistics than in 1995 and 2.5 million events of a special photon-run. We report on the results of the low-mass e$^+$e$^-$-pair analysis. Since the most critical item is the poor signal-to-ba...

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Detalles Bibliográficos
Autores principales: Lenkeit, B., Agakichiev, G., Appelshäuser, H., Baur, R., Braun-Munzinger, P., Ceretto, F., Cherlin, A., Drees, A., Esumi, S., Faschingbauer, U., Fraenkel, Z., Glässel, P., Hering, G., Holl, P., Jung, Ch., Marin, A., Messer, M., Miskowiec, D., Panebrattsev, Y., Pfeiffer, A., Rak, J., Ravinovich, I., Razin, S., Rehak, P., Richter, M., Saveljic, N., Schmitz, W., Schukraft, J., Seipp, W., Shimanskiy, S., Slivova, J., Socol, E., Specht, H.J., Stachel, J., Tserruya, I., Ullrich, Th., Voigt, C., Voloshin, S., Weber, C., Wessels, J.P., Wienold, T., Wurm, J.P., Yurevich, V.
Lenguaje:eng
Publicado: 1999
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(99)85005-2
http://cds.cern.ch/record/431458
Descripción
Sumario:During the 1996 lead run time, CERES has accumulated 42 million events, corresponding to a factor of 5 more statistics than in 1995 and 2.5 million events of a special photon-run. We report on the results of the low-mass e$^+$e$^-$-pair analysis. Since the most critical item is the poor signal-to-background ratio we also discuss the understanding of this background, in absolute terms, with the help of a detailed Monte Carlo simulation. We show preliminary results of the photon analysis and summarize the results of the hadron analysis preliminarily reported on already at QM'97

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