Mid-Rapidity Protons in 158A$\cdot$GeV Pb + Pb Collisions

Proton distributions at mid-rapidity (2 $\le y \le$ 3) have been measured for 158A$\cdot$GeV Pb + Pb collisions in the focusing spectrometer experiment NA44 at CERN. From baryon number conservation and by comparing the experimentally measured dN/dy distribution with the transport model RQMD, we conc...

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Detalles Bibliográficos
Autores principales: Bearden, I G, Bøggild, H, Boissevain, J G, Dodd, J, Erazmus, B, Esumi, S C, Fabjan, Christian Wolfgang, Ferenc, D, Fields, D E, Franz, A, Gaardhøje, J J, Hansen, O, Hardtke, D, van Hecke, H, Holzer, E B, Humanic, T J, Hummel, P, Jacak, B V, Jayanti, R, Kaneta, M, Kopytine, M L, Leltchouk, M, Ljubicic, T, Lörstad, B, Maeda, N, Medvedev, A, Murray, M, Nishimura, S, Ohnishi, H, Paic, G, Pandey, S U, Piuz, François, Pluta, F, Polychronakos, V, Potekhin, M V, Poulard, G, Sakaguchi, A, Simon-Gillo, J, Schmidt-Sørensen, J, Sondheim, W E, Spegel, M, Sugitate, T, Sullivan, J P, Sumi, Y, Willis, W J, Wolf, K, Xu, N, Zachary, D S
Lenguaje:eng
Publicado: 1996
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(96)01249-X
http://cds.cern.ch/record/309221
Descripción
Sumario:Proton distributions at mid-rapidity (2 $\le y \le$ 3) have been measured for 158A$\cdot$GeV Pb + Pb collisions in the focusing spectrometer experiment NA44 at CERN. From baryon number conservation and by comparing the experimentally measured dN/dy distribution with the transport model RQMD, we conclude that a rather high degree of nuclear stopping has been reached for the truly heavy-ion collisions at these energies. Transverse mass distributions exhibit characteristically thermal shapes and the slope parameters increase with the mass of the colliding system.

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