TY - INPR A1 - Bleicher, Marcus A1 - Belkacem, Mohamed A1 - Bass, Steffen A. A1 - Soff, Sven A1 - Stöcker, Horst T1 - Enhanced antiproton production in Pb(160 AGeV)+Pb reactions: evidence for quark gluon matter? N2 - The centrality dependence of the antiproton per participant ratio is studied in Pb(160 AGeV)+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 p p 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. Y1 - 2000 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4792 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-7126 UR - http://de.arxiv.org/abs/hep-ph/0004045 ER -