Pseudorapidity distributions of charged particles in Pb-Pb collisions at super proton synchrotron energies from the NA50 experiment

Autor: T. Claudino, J.-Y. Grossiord, Mario Sitta, Paolo Giubellino, Y.K. Gavrilov, Sergio Serci, M. Idzik, B. Espagnon, X. Tarrago, C. Castanier, Bruno Alessandro, Alexey Kurepin, A. Piccotti, G. Dellacasa, A. Baldit, Serban Constantinescu, Helena Santos, M. Masera, M. P. Comets, F. Prino, M. Mac Cormick, L. Villatte, Roberta Arnaldi, A.A. Grigorian, L. Riccati, A. Romana, Corrado Cicalo, I. Chevrot, A. De Falco, P. Bordalo, R. Hakobyan, J. Fargeix, Ermanno Vercellin, A. Bussiere, N. De Marco, S. Ramos, Stefania Beole, P. Saturnini, W.L. Prado da Silva, Calin Alexa, F. Sigaudo, O. Drapier, R. Haroutunian, M. C. Abreu, Giulio Usai, N. Willis, A. Masoni, M.B. Golubeva, A. Devaux, P. Force, G. Puddu, A. Guichard, C. Quintans, N. Constans, M. Atayan, Enrico Scalas, S. Silva, M. Bedjidian, Brigitte Cheynis, Pietro Cortese, E. Scomparin, G. Borges, T.L. Karavitcheva, S. Grigorian, P. Petiau, Carlos Lourenco, L. Kluberg, N.S. Topilskaya, P. Sonderegger, J.-R. Pizzi, Y. Le Bornee, Marek Idzik, A. Musso, Sanda Dita, D. Jouan, M. Gonin, H.R. Gulkanyan, Mauro Gallio, V. Boldea, L. Capelli, F.F. Guber, Luciano Ramello, P. Rato Mendes, B. Chaurand, C. Gerschel, Laurent Ducroux, C. Baglin, P. Macciotta, E. Chiavassa, Ruben Shahoyan, A. Marzari-Chiesa, Marco Monteno, J. Castor
Rok vydání: 2003
Předmět:
Zdroj: Pramana. 60:1059-1065
ISSN: 0973-7111
0304-4289
DOI: 10.1007/bf02707031
Popis: We present the measurements of charged particle pseudorapidity distributions dNch/dη performed by the NA50 experiment in Pb-Pb collisions at the CERN SPS. Measurements were done at incident energies of 40 GeV (√s = 8.77 GeV) and 158 GeV (√s = 17.3 GeV) per nucleon over a broad impact parameter range. The multiplicity distributions are studied as a function of centrality using the number of participating nucleons(N part ), or the number of binary nucleon-nucleon collisions (Ncoll). Their values at midrapidity exhibit a linear scaling withN part at both energies. Particle yield increases approximately by a factor of 2 betweeny √s = 8.77 GeV and √s = 17.3 GeV.
Databáze: OpenAIRE
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