Universal pion freeze-out in heavy-ion collisions

Based on an evaluation of data on pion interferometry and on particle yields at midrapidity, we propose a universal condition for thermal freeze-out of pions in heavy-ion collisions. We show that freeze-out occurs when the mean free path of pions λf reaches a value of about 1 fm, which is much small...

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Hauptverfasser: Adamová, Dagmar (VerfasserIn) , Appelshäuser, Harald (VerfasserIn) , Braun-Munzinger, Peter (VerfasserIn) , Damjanović, Sanja (VerfasserIn) , Dietel, Thomas (VerfasserIn) , Dietrich, Lars (VerfasserIn) , Filimonov, Kirill (VerfasserIn) , Glässel, Peter (VerfasserIn) , Dubitzky, Wilrid (VerfasserIn) , Milošević, Jovan (VerfasserIn) , Petráček, Vojtech (VerfasserIn) , Bielčíková, Jana (VerfasserIn) , Specht, Hans Joachim (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Tilsner, Heinz (VerfasserIn) , Wessels, Johannes P. (VerfasserIn) , Wienold, Thomas (VerfasserIn) , Windelband, Bernd (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 15 January 2003
In: Physical review letters
Year: 2003, Jahrgang: 90, Heft: 2
ISSN:1079-7114
DOI:10.1103/PhysRevLett.90.022301
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.90.022301
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.90.022301
Volltext
Verfasserangaben:D. Adamová, G. Agakichiev, H. Appelshäuser, V. Belaga, P. Braun-Munzinger, A. Castillo, A. Cherlin, S. Damjanović, T. Dietel, L. Dietrich, A. Drees, S.I. Esumi, K. Filimonov, K. Fomenko, Z. Fraenkel, C. Garabatos, P. Glässel, G. Hering, J. Holeczek, V. Kushpil, B. Lenkeit, W. Ludolphs, A. Maas, A. Marín, J. Milošević, A. Milov, D. Miśkowiec, Yu. Panebrattsev, O. Petchenova, V. Petráček, A. Pfeiffer, J. Rak, I. Ravinovich, P. Rehak, H. Sako, W. Schmitz, J. Schukraft, S. Sedykh, S. Shimansky, J. Slívová, 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, and V. Yurevich (CERES Collaboration)
Beschreibung
Zusammenfassung:Based on an evaluation of data on pion interferometry and on particle yields at midrapidity, we propose a universal condition for thermal freeze-out of pions in heavy-ion collisions. We show that freeze-out occurs when the mean free path of pions λf reaches a value of about 1 fm, which is much smaller than the spatial extent of the system at freeze-out. This critical mean free path is independent of the centrality of the collision and beam energy from the Alternating Gradient Synchrotron to the Relativistic Heavy Ion Collider.
Beschreibung:Gesehen am 28.02.2018
Beschreibung:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.90.022301