Azimuthal dependence of pion source radii inPb+Aucollisions at 158AGeV/c

D. Adamová, G. Agakichiev, A. Andronic, D. Antończyk,H. Appelshäuser,V. V. Belaga, J. Bielčíková, P. Braun‐Munzinger, O. Busch, A. Cherlin, S. Damjanović,T. Dietel, L. Dietrich,A. Drees,Werner Dubitzky, S. Esumi, K. Filimonov, K. Fomenko, Z. Fraenkel, C. Garabatos, P. Glässel, G. Hering, J. Holeczek, M. Kalisky, S. Kniege, V. Kushpil, Axel Maas, A. Maŕın, J. Milošević, D. Miśkowiec,Rafael Ortega, Y. Panebrattsev,O. Petchenova, V. Petráček, M. Płoskoń, S. Radomski, J. Rak, I. Ravinovich, P. Řehák, H. Sako, W. Schmitz, S. Schuchmann, J. Schukraft, S. Sedykh, S. Shimansky, R. Soualah, J. Stachel, M. Šumbera, H. Tilsner, I. Tserruya, G. Tsiledakis,J. P. Wessels, T. Wienold, J.P. Wurm, S. Yurevich,V. I. Yurevich

Physical review（2008）

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摘要

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.Received 16 May 2008DOI:https://doi.org/10.1103/PhysRevC.78.064901©2008 American Physical Society

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azimuthal dependence,pion source radii,mathvariant=normal>au</mmlmi></mmlmrow></mmlmath>collisions,in<mmlmath xmlnsmml=http//wwww3org/1998/math/mathml

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