Enhanced antiproton production in Pb(160 A GeV) + Pb reactions: Evidence for quark gluon matter?


Journal Article

The centrality dependence of the antiproton per participant ratio is studied in Pb(160 A GeV) + Pb reactions. Antiproton production in collisions of heavy nuclei at the CERN/SPS seems considerably enhanced as compared to conventional hadronic physics, given by the antiproton production rates in pp and antiproton annihilation in pp reactions. This enhancement is consistent with the observation of strong in-medium effects in other hadronic observables and may be an indication of partial restoration of chiral symmetry. (C) 2000 Published by Elsevier Science B.V.

Full Text

Duke Authors

Cited Authors

  • Bleicher, M; Belkacem, M; Bass, SA; Soff, S; Stöcker, H

Published Date

  • July 13, 2000

Published In

Volume / Issue

  • 485 / 1-3

Start / End Page

  • 133 - 138

International Standard Serial Number (ISSN)

  • 0370-2693

Digital Object Identifier (DOI)

  • 10.1016/S0370-2693(00)00643-2

Citation Source

  • Scopus