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          Institute: MPI für Kernphysik     Collection: Nuclear Physics and Nuclear Probes     Display Documents



ID: 63098.0, MPI für Kernphysik / Nuclear Physics and Nuclear Probes
Event-by-event fluctuations of the mean transverse momentum in 40, 80, and 158 A GeV/c Pb---Au collisions
Authors:Adamová, D.; Agakichiev, G.; Appelshäuser, H.; Belaga, V.; Braun-Munzinger, P.; Campagnolo, R.; Castillo, A.; Cherlin, A.; Damjanovic, S.; Dietel, T.; Dietrich, L.; Drees, A.; Esumi, S.I.; Filimonov, K.; Fomenko, K.; Fraenkel, Z.; Garabatos, C.; Glässel, P.; Hering, G.; Holeczek, J.; Kushpil, V.; Lenkeit, B.; Ludolphs, W.; Maas, A.; Marín, A.; Milosevic, J.; Milov, A.; Miskowiec, D.; Musa, L.; Panebrattsev, Yu.; Petchenova, O.; Petrácek, V.; Pfeiffer, A.; Rak, J.; Ravinovich, I.; Rehak, P.; Richter, M.; Sako, H.; Schmitz, W.; Schukraft, J.; Sedykh, S.; Seipp, W.; Sharma, A.; Shimansky, S.; Slívová, J.; Specht, H. J.; Stachel, J.; Sumbera, M.; Tilsner, H.; Tserruya, I.; Wessels, J. P.; Wienold, T.; Windelband, B.; Wurm, J. P.; Xie, W.; Yurevich, S.; Yurevich, V.
Language:English
Research Context:CERES/NA45 Collaboration
Date of Publication (YYYY-MM-DD):2003-11
Title of Journal:Nuclear Physics A
Journal Abbrev.:Nucl. Phys. A
Volume:727
Issue / Number:1-2
Start Page:97
End Page:119
Sequence Number of Article:0207005
Copyright:© 2002 Elsevier Science B.V. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Measurements of event-by-event fluctuations of the mean transverse momentum in Pb–Au collisions at 40, 80, and 158 AGeV/c are presented. A significant excess of mean pT fluctuations at mid-rapidity is observed over the expectation from statistically independent particle emission. The
results are somewhat smaller than recent measurements at RHIC. A possible non-monotonic behavior of the mean pT fluctuations as function of collision energy, which may have indicated that the system has passed the critical point of the QCD phase diagram in the range of µB under investigation, has not been observed. The centrality dependence of mean pT fluctuations in Pb–Au is consistent with an extrapolation from pp collisions assuming that the non-statistical fluctuations scale with multiplicity. The results are compared to calculations by the RQMD and URQMD event generators.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group W. Hofmann/High-Energy Heavy Ion Physics (J.-P. Wurm)
External Affiliations:1NPI ASCR, e, Czech Republic
2GSI, 64220 Darmstadt, Germany
3Physikalisches Institut der Universität Heidelberg, 69120 Heidelberg, Germany
4JINR, Dubna, Russia
5Weizmann Institute, Rehovot 76100, Israel
6State University of New York at Stony Brook, Stony Brook, New York 11794, USA
7CERN, 1211 Geneva 23, Switzerland
8Brookhaven National Laboratory, Upton, New York 11973, USA
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