TY - INPR A1 - Zschiesche, Detlef A1 - Bass, Steffen A. A1 - Bleicher, Marcus A1 - Brachmann, Jörg A1 - Gerland, Lars A1 - Paech, Kerstin A1 - Scherer, Stefan A1 - Soff, Sven A1 - Spieles, Christian A1 - Weber, Henning A1 - Stöcker, Horst A1 - Greiner, Walter T1 - Current status of quark gluon plasma signals N2 - Compelling evidence for the creation of a new form of matter has been claimed to be found in Pb+Pb collisions at SPS. We discuss the uniqueness of often proposed experimental signatures for quark matter formation in relativistic heavy ion collisions. It is demonstrated that so far none of the proposed signals like J/psi meson production/suppression, strangeness enhancement, dileptons, and directed flow unambigiously show that a phase of deconfined matter has been formed in SPS Pb+Pb collisions. We emphasize the need for systematic future measurements to search for simultaneous irregularities in the excitation functions of several observables in order to come close to pinning the properties of hot, dense QCD matter from data. KW - QGP signals KW - strangeness KW - J/ϕ KW - particle ratios KW - flow KW - dileptons Y1 - 2001 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4784 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-7179 SN - 1588-2675 SN - 1219-7580 N1 - Preprint, erschienen in: Heavy ion physics, 14.2001, Nr. 1-4, S. 425–438, doi:10.1556/APH.14.2001.1-4.40 SP - 1 EP - 12 ER -