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Event-by-event fluctuations of the mean transverse momentum in 40, 80, and 158 A GeV/c Pb-Au collisions: CERES collaboration

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Measurements of event-by-event fluctuations of the mean transverse momentum in Pb-Au collisions at 40, 80, and 158 A GeV/c are presented. A significant excess of mean p_T fluctuations at mid-rapidity is observed over the expectation from statistically independent particle emission. The results are s...

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Hauptverfasser: Adamová, Dagmar (VerfasserIn) , Appelshäuser, Harald (VerfasserIn) , Braun-Munzinger, Peter (VerfasserIn) , Damjanović, Sanja (VerfasserIn) , Dietel, Thomas (VerfasserIn) , Dietrich, Lars (VerfasserIn) , Glässel, Peter (VerfasserIn) , Dubitzky, Wilrid (VerfasserIn) , Milošević, Jovan (VerfasserIn) , Richter, Michael (VerfasserIn) , Specht, Hans Joachim (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Tilsner, Heinz (VerfasserIn) , Wessels, Johannes P. (VerfasserIn) , Wienold, Thomas (VerfasserIn) , Windelband, Bernd (VerfasserIn)
Dokumenttyp: Article (Journal) Kapitel/Artikel
Sprache:Englisch
Veröffentlicht: 2003
In: Arxiv

Online-Zugang:Verlag, kostenfrei, Volltext: http://arxiv.org/abs/nucl-ex/0305002
Volltext
Verfasserangaben:D. Adamová, G. Agakichiev, H. Appelshäuser, V. Belaga, P. Braun-Munzinger, R. Campagnolo, A. Castillo, A. Cherlin, S. Damjanović, T. Dietel, L. Dietrich, A. Drees, S. Esumi, K. Filimonov, K. Fomenko, Z. Fraenkel, C. Garabatos, P. Glässel, G. Hering, J. Holeczek, V. Kushpil, B. Lenkeit, W. Ludolphs, A. Maas, A. Marı́n, J. Milošević, A. Milov, D. Miśkowiec, L. Musa, Yu. Panebrattsev, O. Petchenova, V. Petráček, A. Pfeiffer, J. Rak, I. Ravinovich, P. Rehak, M. Richter, H. Sako, W. Schmitz, J. Schukraft, S. Sedykh, W. Seipp, A. Sharma, S. Shimansky, J. Slı́vová, H.J. Specht, J. Stachel, M. Šumbera, H. Tilsner, I. Tserruya, J.P. Wessels, T. Wienold, B. Windelband, J.P. Wurm, W. Xie, S. Yurevich, V. Yurevich
Beschreibung
Zusammenfassung:Measurements of event-by-event fluctuations of the mean transverse momentum in Pb-Au collisions at 40, 80, and 158 A GeV/c are presented. A significant excess of mean p_T 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 behaviour of the mean p_T 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 mu_B under investigation, has not been observed. The centrality dependence of mean p_T 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.
Beschreibung:Gesehen am 27.02.2018
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