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

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

1999-10-22

arxiv.org/abs/nucl-ex/9910015v1

Nucl.Phys. A661 (1999) 23-32

Physics

Nuclear Physics

Nuclear Experiment

10 pages, 9 figures, Proceedings of the XIV Int. Conf. on Nucleus-Nucleus Collisions,Quark Matter 99, Torino, Italy, May 10 -

Scientific paper

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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