Expansion dynamics of Pb-Pb collisions at 40 A GeV/c viewed by negatively charged hadrons

Details Expansion dynamics of Pb-Pb collisions at 40 A GeV/c viewed by negatively charged hadrons Expansion dynamics of Pb-Pb collisions at 40 A GeV/c viewed by negatively charged hadrons

2007-01-11

arxiv.org/abs/nucl-ex/0701020v1

J.Phys.G33:403-430,2007

Physics

Nuclear Physics

Nuclear Experiment

29 pages, 18 figures

Scientific paper

10.1088/0954-3899/34/3/001

In this paper we present results on transverse mass spectra and Hanbury-Brown and Twiss correlation functions of negatively charged hadrons, which are expected to be mostly negative pions, measured in Pb-Pb collisions at 40 A GeV/c beam momentum. Based on these data, the collision dynamics and the space-time extent of the system at the thermal freeze-out are studied over a centrality range corresponding to the most central 53% of the Pb--Pb inelastic cross section. Comparisons with freeze-out conditions of strange particles and HBT results from other experiments are discussed.

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