Azimuthal dependence of pion source radii in Pb+Au collisions at 158 A GeV

CERES Collaboration: D. Adamova , G. Agakichiev , A. Andronic , D. Antonczyk , H. Appelshaeuser , V. Belaga , J. Bielcikova , P. Braun-Munzinger

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O. Busch A. Cherlin S. Damjanovic T. Dietel L. Dietrich A. Drees W. Dubitzky S. I. Esumi K. Filimonov K. Fomenko Z. Fraenkel C. Garabatos P. Glaessel G. Hering J. Holeczek M. Kalisky S. Kniege V. Kushpil A. Maas A. Marin J. Milosevic D. Miskowiec R. Ortega Y. Panebrattsev O. Petchenova V. Petracek M. Ploskon S. Radomski J. Rak I. Ravinovich P. Rehak H. Sako W. Schmitz S. Schuchmann J. Schukraft S. Sedykh S. Shimansky R. Soualah J. Stachel M. Sumbera H. Tilsner I. Tserruya G. Tsiledakis J. P. Wessels T. Wienold J. P. Wurm S. Yurevich V. Yurevich

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classification ⚛️ nucl-ex

keywords pionreactionanalysisazimuthaldataplanesourceangle

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We present results of a two-pion correlation analysis performed with the Au+Pb 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 AGS and at RHIC.

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Azimuthal dependence of pion source radii in Pb+Au collisions at 158 A GeV

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