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HK: Fachverband Physik der Hadronen und Kerne
HK 13: Physik mit schweren Ionen
HK 13.7: Talk
Tuesday, March 13, 2007, 15:45–16:00, F
Charmonium suppression in In+In at SPS as a signal of quark-gluon plasma — •Olena Linnyk1, Elena Bratkovskaya1, Wolfgang Cassing2, and Horst Stoecker1 — 1FIAS, Universitaet Frankfurt, Max von Laue Str 1, 60438 Frankfurt — 2Institut fuer Theoretische Physik, Universitaet Giessen, Heinrich Buff Ring 16, 35392 Giessen
We explain the anomalous charmonium suppression, which was recently observed by NA60 collaboration in In+In collisions, in two different scenarios: 1) scattering on comoving mesons, 2) melting in quark-gluon plasma. The results suggest that the data do not rule out the purely hadronic suppression mechanism. Additional, in particular experimental, studies are necessary, before the clear signature of the creation of a deconfined partonic state can be established. Predictions for the future CMB experiment at FAIR are presented as well.