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

The NA57 Collaboration
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Abstract

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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The NA57 Collaboration. 2007-01-11. Expansion dynamics of Pb-Pb collisions at 40 A GeV/c viewed by negatively charged hadrons. https://doi.org/10.1088/0954-3899%2F34%2F3%2F001

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