Particle production in central Pb + Pb collisions at 158 AGeV/c
- Bearden, I G
- Bøggild, H
- Boissevain, J G
- Christiansen, P H L
- Conin, L
- Dodd, J
- Erazmus, B
- Esumi, S
- Fabjan, Christian Wolfgang
- Ferenc, D
- Fields, D E
- Franz, A
- Gaardhøje, J J
- Hamelin, M
- Hansen, A G
- Hansen, O
- Hardtke, D
- Holzer, E B
- Humanic, T J
- Hummel, P
- Jacak, B V
- Kaimi, K
- Kaneta,1 M
- Kohama, T
- Kopytine, M
- Leltchouk, M
- Ljubicic, A
- Lörstad, B
- Maeda, N
- Malina, R
- Martin, L
- Medvedev, A
- Murray, M
- Ohnishi, H
- Paic, G
- Pandey, S U
- Piuz, François
- Pluta, J
- Polychronakos, V
- Potekhin, M V
- Poulard, G
- Reichhold, D M
- Sakaguchi, A
- Schmidt-Sørensen, J
- Simon-Gillo, J
- Sondheim, W E
- Spegel, M
- Sugitate, T
- Sullivan, J P
- Sumi, Y
- Willis, W J
- Wolf, K L
- Xu, N
- Zachary, D S
- van Hecke, H
Publication date
January 2002
DOI Publisher
American Physical Society (APS) ISSN
0556-2813 Citation count (estimate)
24Abstract
The NA44 experiment has measured single-particle inclusive spectra for charged pions, kaons, and protons as a function of transverse mass near midrapidity in 158A GeV/c Pb+Pb collisions. From the particle mass dependence of the observed m/sub T/ distributions, we are able to deduce a value of about 120 MeV for the temperature at thermal freeze-out. From the observed ratios of the rapidity densities, we find values of the chemical potentials for light and strange quarks and a chemical freeze-out temperature of approximately 140 MeV. (34 refs)
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