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Phys. Rev. C 78, 064901 (2008) [6 pages]Azimuthal dependence of pion source radii in Pb+Au collisions at 158A GeV/c
D. Adamová,1 G. Agakichiev,2 A. Andronic,3 D. Antończyk,4 H. Appelshäuser,4 V. Belaga,2 J. Bielčíková,5,6 P. Braun-Munzinger,3 O. Busch,6 A. Cherlin,7 S. Damjanović,6 T. Dietel,8 L. Dietrich,6 A. Drees,9 W. Dubitzky,6 S. I. Esumi,6 K. Filimonov,6 K. Fomenko,2 Z. Fraenkel,7 C. Garabatos,3 P. Glässel,6 G. Hering,3 J. Holeczek,3 M. Kalisky,8 S. Kniege,4 V. Kushpil,1 A. Maas,3 A. Marín,3 J. Milošević,6 D. Mi
 kowiec,3 R. Ortega,6 Y. Panebrattsev,2 O. Petchenova,2 V. Petráček,6 M. P oskoń,4 S. Radomski,6 J. Rak,3 I. Ravinovich,7 P. Rehak,10 H. Sako,3 W. Schmitz,6 S. Schuchmann,4 J. Schukraft,11 S. Sedykh,3 S. Shimansky,2 R. Soualah,6 J. Stachel,6 M. Šumbera,1 H. Tilsner,6 I. Tserruya,7 G. Tsiledakis,3 J. P. Wessels,8 T. Wienold,6 J. P. Wurm,5 S. Yurevich,3 and V. Yurevich21Nuclear Physics Institute of ASCR, 25068 Řež, Czech Republic 2Joint Institute for Nuclear Research, RU-141980 Dubna, Russia 3GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany 4Institut für Kernphysik der Goethe-Universität, D-60438 Frankfurt am Main, Germany 5Max Planck Institute for Nuclear Physics, D-69117 Heidelberg, Germany 6Physikalisches Institut of the University of Heidelberg, D-69120 Heidelberg, Germany 7Weizmann Institute of Science, Rehovot 76100, Israel 8University of Münster, D-48149 Münster, Germany 9Stony Brook University, Stony Brook, NY 11794, USA 10Brookhaven National Lab, Upton, NY 11973, USA 11European Organization for Nuclear Research CERN, 1211 Geneva, Switzerland
Received 16 May 2008; published 4 December 2008
We present results of a two-pion correlation analysis performed with the Pb+Au collision data collected by the upgraded CERES experiment in the fall of 2000. The analysis was done in bins of the reaction centrality and the pion azimuthal emission angle with respect to the reaction plane. The pion source, deduced from the data, is slightly elongated in the direction perpendicular to the reaction plane, similarly as was observed at the Brookhaven National Laboratory Alternating Gradient Synchrotron and Relativistic Heavy Ion Collider. ©2008 The American Physical Society REFERENCES (24)
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