Onset of deconfinement and search for the critical point of strongly interacting matter at CERN SPS energies
- Rybczynski, Maciej
- Anticic, T.
- Baatar, B.
- Barna, D.
- Bartke, J.
- Beck, H.
- Betev, L.
- Bialkowska, H.
- Blume, C.
- Bogusz, M.
- Boimska, B.
- Book, J.
- Botje, M.
- Buncic, P.
- Cetner, T.
- Christakoglou, P.
- Chung, P.
- Chvala, O.
- Cramer, J.G.
- Eckardt, V.
- Fodor, Z.
- Foka, P.
- Friese, V.
- Gazdzicki, M.
- Grebieszkow, K.
- Hohne, C.
- Kadija, K.
- Karev, A.
- Kolesnikov, V.I.
- Kowalski, M.
- Kresan, D.
- Laszlo, A.
- Lacey, R.
- van Leeuwen, M.
- Mackowiak-Pawlowska, M.
- Makariev, M.
- Malakhov, A.I.
- Mateev, M.
- Melkumov, G.L.
- Mitrovski, M.
- Mrowczynski, St.
- Nicolic, V.
- Palla, G.
- Panagiotou, A.D.
- Peryt, W.
- Pluta, J.
- Prindle, D.
- Puhlhofer, F.
- Renfordt, R.
- Roland, C.
- Roland, G.
- Rybczynski, M.
- Rybicki, A.
- Sandoval, A.
- Schmitz, N.
- Schuster, T.
- Seyboth, P.
- Sikler, F.
- Skrzypczak, E.
- Slodkowski, M.
- Stefanek, G.
- Stock, R.
- Strobele, H.
- Susa, T.
- Szuba, M.
- Utvic, M.
- Varga, D.
- Vassiliou, M.
- Veres, G.I.
- Vesztergombi, G.
- Vranic, D.
- Wlodarczyk, Z.
- Wojtaszek-Szwarc, A.
DOIAbstract
The exploration of the QCD phase diagram particularly the search for a phase transition from hadronic to partonic degrees of freedom and possibly a critical endpoint, is one of the most challenging tasks in present heavy-ion physics. As observed by the NA49 experiment, several hadronic observables in central Pb+Pb collisions at the CERN SPS show qualitative changes in their energy dependence. These features are not observed in elementary interactions and indicate the onset of a phase transition in the SPS energy range. The existence of a critical point is expected to result in the increase of event-by-event fluctuations of various hadronic observables provided that the freeze-out of the measured hadrons occurs close to its location in the p...
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