Multi-strange baryon and anti-baryon productions in S+Pb collisions at 200 GeV/n

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:387184

Jones, P G ^[1]

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1. Lawrence Berkeley Laboratory, CA (United States)

Under conditions of extreme temperature and density, hadronic matter is predicted to undergo a phase transition into a deconfined state consisting of quasi-free quarks and gluons: the quark-gluon plasma. Such conditions might be prevalent in the collision of medium-heavy ions at ultra-relativistic energies. As a consequence of the liberated color degrees of freedom an unusually high strange quark density is expected at the freezeout time of the plasma. This is of consequence for the production of multi-strange baryons and antibaryons emerging from these reactions. To this end, the production of E{sup -} and E{sup +} have been measured using the NA36 Time Projection Chamber in S+Pb collisions at 200 GeV/n at the CERN SPS. A total yield of approximately 100 E{sup -} and E{sup +} decays have currently been reconstructed from the data. The production ratios of E{sup -}, E{sup +}, {Lambda} and {Lambda} have been studied in order to provide important insight into the underlying reaction dynamics. This is potentially most interesting for central collisions where plasma effects may be observed.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 387184
• Report Number(s): CONF-931044--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GEV RANGE 100-1000
HEAVY ION REACTIONS
LEAD
PARTICLE PRODUCTION
PHASE TRANSFORMATIONS
QUARK MATTER
SULFUR
TIME PROJECTION CHAMBERS
XI BARYONS