Evidence of Early Multistrange Hadron Freeze-Out in High Energy Nuclear Collisions

Journal Article · Tue Dec 01 00:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.5764· OSTI ID:289172

van Hecke, H ^[1]; Sorge, H ^[2]; Xu, N ^[3]

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1. MS H846, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Department of Physics, SUNY at Stony Brook, New York 11794 (United States)
3. Nuclear Science Division, LBNL, Berkeley, California 94720 (United States)

Recently reported transverse momentum distributions of strange hadrons produced in Pb(158A GeV ) on Pb collisions and corresponding results from the relativistic quantum molecular dynamics 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 (at about 1 GeV/fm{sup 3} ). The systematics of the strange and nonstrange particle spectra indicate that the observed transverse flow develops mainly in the late hadronic stages of these reactions. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098; W-7405-ENG-36
• OSTI ID: 289172
• Journal Information: Physical Review Letters, Vol. 81, Issue 26; Other Information: PBD: Dec 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
QUARK MATTER
MOLECULAR DYNAMICS METHOD
HEAVY ION REACTIONS
LEAD
HADRONS
QUARK-GLUON INTERACTIONS
STRANGE PARTICLES