Evidence of early multi-strange hadron freeze-out in high energy nuclear collisions

Details Evidence of early multi-strange hadron freeze-out in high energy nuclear collisions Evidence of early multi-strange hadron freeze-out in high energy nuclear collisions

1998-04-18

arxiv.org/abs/nucl-th/9804035v1

Phys.Rev.Lett. 81 (1998) 5764-5767

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.81.5764

Recently reported transverse momentum distributions of strange hadrons produced in Pb(158AGeV) on Pb collisions and corresponding results from the relativistic quantum molecular dynamics (RQMD) approach are examined. We argue that the experimental observations favor a scenario in which multi-strange hadrons are formed and decouple from the system rather early at large energy densities (around 1 GeV/fm$^3$). The systematics of the strange and non-strange particle spectra indicate that the observed transverse flow develops mainly in the late hadronic stages of these reactions.

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