Modification of jet-like correlations in Pb - Au collisions at 158A GeV/c

Results of a two-particle correlation analysis of high-pt charged particles in Pb–Au collisions at 158A GeV/c are presented. The data have been recorded by the CERESexperiment at the CERN-SPS. The correlations are studied as function of transverse momentum, particle charge and collision centrality....

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Detalles Bibliográficos
Autores principales: Adamova, D., Agakichiev, G., Antonczyk, D., Appelshauser, H., Belaga, V., Bielcikova, J., Braun-Munzinger, P., Busch, O., Cherlin, A., Damjanovic, S., Dietel, T., Dietrich, L., Drees, A., Dubitzky, W., Esumi, S.I., Filimonov, K., Fomenko, K., Fraenkel, Z., Garabatos, C., Glassel, P., Holeczek, J., Kalisky, M., Kniege, S., Kushpil, V., Maas, A., Marin, A., Milosevic, J., Milov, A., Miskowiec, D., Panebrattsev, Yu., Petchenova, O., Petracek, V., Pfeiffer, A., Ploskon, M., Rak, J., Ravinovich, I., Rehak, P., Sako, H., Schmitz, W., Schuchmann, S., Sedykh, S., Shimansky, S., Stachel, J., Sumbera, M., Tilsner, H., Tserruya, I., Wessels, J.P., Wienold, T., Wurm, J.P., Xie, W., Yurevich, S., Yurevich, V.
Lenguaje:eng
Publicado: 2009
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2009.05.048
http://cds.cern.ch/record/1173247
Descripción
Sumario:Results of a two-particle correlation analysis of high-pt charged particles in Pb–Au collisions at 158A GeV/c are presented. The data have been recorded by the CERESexperiment at the CERN-SPS. The correlations are studied as function of transverse momentum, particle charge and collision centrality. We observe a jet-like structure in the vicinity of a high-pt trigger particleand a broad back-to-back distribution. The yields of associated particles per trigger show a strongdependence on the trigger/associate charge combination. A comparison to PYTHIA confirmsthe jet-likepattern at the near-side but suggestsa strongmodification at the away-side, implyingsignificant energy transferof the hard-scattered parton to the medium.

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