High $p_{T}$ charged-pion production in Pb-Au collisions at 158 AGeV/c

The CERES/Na45 experiment at CERN SPS measured transverse momentum spectra ofcharged-pions in the range 1<pt<4GeV/c near mid-rapidity in 158 AGeV/c Pb-Aucollisions. The invariant transverse momentum spectra are exponential over theentire observed range. The average inverse slope is 245+/- 5MeV...

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Detalles Bibliográficos
Autores principales: Agakishiev, G., Baur, R., Braun-Munzinger, P., Drees, A., Esumi, S., Faschingbauer, U., Fraenkel, Z., Fuchs, C., Glassel, P., de los Heros, C.P., Holl, P., Jung, C., Lenkeit, B., Messer, F., Messer, M., Panebrattsev, Y., Pfeiffer, A., Rak, J., Ravinovich, I., Razin, S., Rehak, P., Richter, M., Saveljic, N., Schukraft, J., Shimansky, S., Seipp, W., Socol, E., Specht, H.J., Stachel, J., Tel-Zur, G., Tserruya, Itzhak, Ullrich, T., Voigt, C., Weber, C., Wessels, J.P., Wienold, T., Wurm, J.P., Yurevich, V.
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/430468
Descripción
Sumario:The CERES/Na45 experiment at CERN SPS measured transverse momentum spectra ofcharged-pions in the range 1<pt<4GeV/c near mid-rapidity in 158 AGeV/c Pb-Aucollisions. The invariant transverse momentum spectra are exponential over theentire observed range. The average inverse slope is 245+/- 5MeV/c, it shows a2.4 0ncrease with centrality of the collision over the 35most centralfraction of the cross section. The pi-/pi+ ratio is constant at 1.028+/-0.005over the pt interval measured.

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