Event-by-event analysis of baryon-strangeness correlations: Pinning down the critical temperature and volume of quark-gluon-plasma formation
- Frankfurt Institute for Advanced Studies (FIAS), Johann Wolfgang Goethe Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt (Germany)
- Institut fuer Theoretische Physik, Johann Wolfgang Goethe Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt (Germany)
The recently proposed baryon-strangeness correlation (C{sub BS}) is studied with a string-hadronic transport model (UrQMD) for various energies from E{sub lab}=4A GeV to {radical}(s)=200A GeV. It is shown that rescattering among secondaries cannot mimic the predicted correlation pattern expected for a quark-gluon-plasma. However, we find a strong increase of the C{sub BS} correlation function with decreasing collision energy for p+p and Au+Au and/or Pb+Pb reactions. For Au+Au reactions at the top BNL Relativistic Heavy Ion Collider energy ({radical}(s)=200A GeV), the C{sub BS} correlation is constant for all centralities and compatible with the p+p result. With increasing width of the rapidity window, C{sub BS} follows roughly the shape of the baryon rapidity distribution. We suggest studying the energy and centrality dependence of C{sub BS} to gain information on the onset of the deconfinement transition in temperature and volume.
- OSTI ID:
- 20771246
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 73, Issue 2; Other Information: DOI: 10.1103/PhysRevC.73.021901; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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