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[en] Results obtained in the frame of CERN SPS heavy ion program by experiments involving italian participation and projects for future experiments are presented. The WA97/NA57 Collaboration observed a strangeness production enhancement measuring Λ, Ξ, Ω yields in Pb-Pb collisions. NA50 observed a threshold effect in the anomalous charmonium suppression. Both effects are not accounted for in a purely hadronic scenario, while they find a natural explanation in the formation of a deconfined state of quarks and gluons. The program of experiment NA60, which will probably conclude the CERN SPS activity in the forthcoming years, and of ALICE, which will start data taking in the LHC era, are also highlighted. (author)
Source
Yoshida, Koichi; Tanihata, Isao (Institute of Physical and Chemical Research, Wako, Saitama (Japan)) (eds.); Kubono, Shigeru (ed.) (Tokyo Univ., Center for Nuclear Study, Tokyo (Japan)); Signorini, Cosimo (ed.) (INFN, Frascati (Italy)); 512 p; ISBN 981-238-214-3; 
; 2002; p. 169-180; 4. Italy-Japan symposium on heavy ion physics; Wako, Saitama (Japan); 26-29 Sep 2001; 22 refs., 10 figs.
; 2002; p. 169-180; 4. Italy-Japan symposium on heavy ion physics; Wako, Saitama (Japan); 26-29 Sep 2001; 22 refs., 10 figs.