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

ID: 63228.0, MPI für Kernphysik / Nuclear Physics and Nuclear Probes
Universal pion freeze-out in heavy-ion collisions
Authors:Adamova, D.; Agakichiev, G.; Appelshauser, H.; Belaga, V.; Braun-Munzinger, P.; Castillo, A.; Cherlin, A.; Damjanovic, S.; Dietel, T.; Dietrich, L.; Drees, A.; Esumi, S. I.; Filimonov, K.; Fomenko, K.; Fraenkel, Z.; Garabatos, C.; Glassel, P.; Hering, G.; Holeczek, J.; Kushpil, V.; Lenkeit, B.; Ludolphs, W.; Maas, A.; Marin, A.; Milosevic, J.; Milov, A.; Miskowiec, D.; Panebrattsev, Y.; Petchenova, O.; Petracek, V.; Pfeiffer, A.; Rak, J.; Ravinovich, I.; Rehak, P.; Sako, H.; Schmitz, W.; Schukraft, J.; Sedykh, S.; Shimansky, S.; Slivova, 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.
Date of Publication (YYYY-MM-DD):2003-01-17
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Issue / Number:2
Start Page:022301
End Page:022301
Sequence Number of Article:022301
Review Status:Peer-review
Audience:Experts Only
Abstract / Description: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 lambda(f) 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.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group W. Hofmann/High-Energy Heavy Ion Physics (J.-P. Wurm)
External Affiliations:Nucl Phys Inst ASCR, Rez 25068, Czech Republic; Nucl Phys Inst ASCR, Rez 25068, Czech Republic; Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany; Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany; Joint Inst Nucl Res, Dubna 141980, Russia; Weizmann Inst Sci, IL-76100 Rehovot, Israel; SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA; CERN, CH-1211 Geneva 23, Switzerland; Brookhaven Natl Lab, Upton, NY 11973 USA; Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
Identifiers:ISI:000180444200011 [ID No:1]
ISSN:0031-9007 [ID No:2]
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