The multiplicity of charged particles in the central rapidity region has been measured by the NA57 experiment in Pb-Pb collisions at the CERN SPS at two beam momenta: 158 A GeV/c and 40 A GeV/c. The value of dN(ch)/d eta at the maximum has been determined and its behaviour as a function of centrality has been studied in the centrality range covered by NA57 (about 50% of the inelastic cross section). The multiplicity increase is compatible with a logarithmic dependence on the centre of mass energy. The results are compared with those from other experiments and with the VENUS and RQMD models.

Multiplicity of charged particles in Pb-Pb collisions at SPS energies / Antinori, F.; Bacon, P.; Badalà, A.; Barbera, R.; Belogianni, A.; Bhasin, A.; Bloodworth, I. J.; Bombara, M.; Bruno, G. E.; Bull, S. A.; Caliandro, R.; Campbell, M.; Carena, W.; Carrer, N.; Clarke, R. F.; Dainese, A.; de Haas, A. P.; de Rijke, P. C.; Di Bari, D.; Di Liberto, S.; Divià, R.; Elia, D.; Evans, D.; Feofilov, G. A.; Fini, R. A.; Ganoti, P.; Ghidini, B.; Grella, G.; Helstrup, H.; Hetland, K. F.; Holme, A. K.; Jacholkowski, A.; Jones, G. T.; Jovanovic, P.; Jusko, A.; Kamermans, R.; Kinson, J. B.; Knudson, K.; Kolozhvari, A. A.; Kondratiev, V.; Králik, I.; Kravcáková, A.; Kuijer, P.; Lenti, V.; Lietava, R.; Løvhøiden, G.; Manzari, V.; Martinská, G.; Mazzoni, M. A.; Meddi, F.; Michalon, A.; Morando, M.; Nappi, E.; Navach, F.; Norman, P. I.; Palmeri, A.; Pappalardo, G. S.; Pastircák, B.; Pisút, J.; Pisútová, N.; Platt, R. J.; Posa, F.; Quercigh, E.; Riggi, F.; Röhrich, D.; Romano, G.; Safarík, K.; Síndor, L.; Schillings, E.; Segato, G.; Sené, M.; Snoeys, W.; Soramel, F.; Spyropoulou-Stassinaki, M.; Staroba, P.; Toulina, T. A.; Turrisi, R.; Tveter, T. S.; Urbán, J.; Valiev, F. F.; van den Brink, A.; van de Ven, P.; Vande Vyvre, P.; van Eijndhoven, N.; van Hunen, J.; Vascotto, A.; Vik, T.; Villalobos Baillie, O.; Vinogradov, L.; Virgili, T.; Votruba, M. F.; Vrláková, J.; Závada, P.. - In: JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. - ISSN 0954-3899. - 31:5(2005), pp. 321-335. [10.1088/0945-3899/31/5/004]

Multiplicity of charged particles in Pb-Pb collisions at SPS energies

Bruno, G. E.;
2005-01-01

Abstract

The multiplicity of charged particles in the central rapidity region has been measured by the NA57 experiment in Pb-Pb collisions at the CERN SPS at two beam momenta: 158 A GeV/c and 40 A GeV/c. The value of dN(ch)/d eta at the maximum has been determined and its behaviour as a function of centrality has been studied in the centrality range covered by NA57 (about 50% of the inelastic cross section). The multiplicity increase is compatible with a logarithmic dependence on the centre of mass energy. The results are compared with those from other experiments and with the VENUS and RQMD models.
2005
Multiplicity of charged particles in Pb-Pb collisions at SPS energies / Antinori, F.; Bacon, P.; Badalà, A.; Barbera, R.; Belogianni, A.; Bhasin, A.; Bloodworth, I. J.; Bombara, M.; Bruno, G. E.; Bull, S. A.; Caliandro, R.; Campbell, M.; Carena, W.; Carrer, N.; Clarke, R. F.; Dainese, A.; de Haas, A. P.; de Rijke, P. C.; Di Bari, D.; Di Liberto, S.; Divià, R.; Elia, D.; Evans, D.; Feofilov, G. A.; Fini, R. A.; Ganoti, P.; Ghidini, B.; Grella, G.; Helstrup, H.; Hetland, K. F.; Holme, A. K.; Jacholkowski, A.; Jones, G. T.; Jovanovic, P.; Jusko, A.; Kamermans, R.; Kinson, J. B.; Knudson, K.; Kolozhvari, A. A.; Kondratiev, V.; Králik, I.; Kravcáková, A.; Kuijer, P.; Lenti, V.; Lietava, R.; Løvhøiden, G.; Manzari, V.; Martinská, G.; Mazzoni, M. A.; Meddi, F.; Michalon, A.; Morando, M.; Nappi, E.; Navach, F.; Norman, P. I.; Palmeri, A.; Pappalardo, G. S.; Pastircák, B.; Pisút, J.; Pisútová, N.; Platt, R. J.; Posa, F.; Quercigh, E.; Riggi, F.; Röhrich, D.; Romano, G.; Safarík, K.; Síndor, L.; Schillings, E.; Segato, G.; Sené, M.; Snoeys, W.; Soramel, F.; Spyropoulou-Stassinaki, M.; Staroba, P.; Toulina, T. A.; Turrisi, R.; Tveter, T. S.; Urbán, J.; Valiev, F. F.; van den Brink, A.; van de Ven, P.; Vande Vyvre, P.; van Eijndhoven, N.; van Hunen, J.; Vascotto, A.; Vik, T.; Villalobos Baillie, O.; Vinogradov, L.; Virgili, T.; Votruba, M. F.; Vrláková, J.; Závada, P.. - In: JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. - ISSN 0954-3899. - 31:5(2005), pp. 321-335. [10.1088/0945-3899/31/5/004]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/6345
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