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Experimental Status Of $J/\psi$ Suppression
/ Kluberg, L (Paris U., VI-VII ; Ecole Polytechnique) ; Abreu, M C (LIP, Lisbon) ; Alessandro, B (Turin U. ; INFN, Turin) ; Alexa, C (Bucharest U.) ; Arnaldi, R (Turin U. ; INFN, Turin) ; Astruc, J (Orsay, IPN) ; Atayan, M (Yerevan Phys. Inst.) ; Baglin, C (Annecy, LAPP) ; Baldit, A (Clermont-Ferrand U.) ; Bedjidian, M (Lyon, IPN) et al.
The most recent results obtained by experiment NA50 show that the $J /\psi$ cross-section per nucleon-nucleon collision in semi-peripheral Pb-Pb reactions is "normally" suppressed in the sense that it follows the trend already observed from p-p and up to the most central S-U reactions. A clear change of behaviour is observed for more central Pb-Pb collisions which could be due to the transition of normal nuclear matter to its predicted Quark-Gluon Plasma state
Hanoi : The Gioi, 2001 - 6 p.
- Published in : , pp. 221-226
Fulltext: PDF;
In : 34th Rencontres de Moriond, Les Arcs, France, 20 - 27 Mar 1999, pp.221-226
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Centrality dependece of the $ J/\psi$ suppression in ultrarelativistic Pb-Pb collisions
/ Scomparin, Enrico (Turin U. ; INFN, Turin) ; Abreu, M C (LIP, Lisbon) ; Alessandro, B (Turin U. ; INFN, Turin) ; Alexa, C (Bucharest, IFIN-HH) ; Arnaldi, R (Turin U. ; INFN, Turin) ; Atayan, M (Yerevan Phys. Inst.) ; Baglin, C (Annecy, LAPP) ; Baldit, A (Clermont-Ferrand U.) ; Bedjidian, M (Lyon, IPN) ; Beole, S (Turin U. ; INFN, Turin) et al.
/NA50
2000 - 4 p.
- Published in : , pp. 395-398
fulltext: PDF;
In : 35th Rencontres de Moriond, Les Arcs, France, 18 - 25 Mar 2000, pp.395-398
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Charmonia suppression in nucleus-nucleus interactions at CERN SPS
/ Arnaldi, R ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Atayan, M ; Baglin, C ; Baldit, A ; Bedjidian, M ; Beolè, S ; Boldea, V et al.
The NA50 experiment at CERN SPS has studied charmonium production in Pb-Pb collisions at 158 GeV/c per nucleon. According to the theoretical predictions the observation of the suppression of the $J/\psi$ production yield is expected to be an unambiguous probe for a phase transition from ordinary nuclear matter towards a state in which quarks and gluons are deconfined. [...]
2004
- Published in : Acta Phys. Hung. A 19 (2004) 337-41
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The production of $\phi , \omega$ and $\rho$ mesons in $p$-, $d$-, S- and Pb- induced reactions at the CERN SPS
/ Jouan, D ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Atayan, M ; Baglin, C ; Baldit, A ; Bedjidian, M ; Beolè, S ; Boldea, V et al.
From proton, deuteron, S- and Pb-induced reactions, experiments NA38 and NA50 have measured muon pair production with various targets. In particular, the production rates of the $\phi, \omega$ and $\rho$ mesons have been simultaneously extracted and compared. [...]
2004
- Published in : J. Phys. G 30 (2004) S277-82
In : 7th International Conference on Strangeness in Quark Matter, Atlantic Beach, NC, USA, 12 - 17 Mar 2003, pp.S277-82
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Charmonium production in Pb-Pb collisions
/ De Marco, N ; Abreu, M C ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Astruc, J ; Atayan, M ; Baglin, C ; Baldit, A ; Bedjidian, Marc et al.
The NA50 Collaboration studies the J/psi, psi' and Drell-Yan production via their dimuon decay in Pb-Pb interactions at 158 GeV per nucleon at the CERN SPS: the most recent results on charmonium production are presented here..
Geneva : CERN, 2000
- Published in : Czechoslov. J. Phys. 50 (2000) 114-19
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Study of deconfinement in NA50
/ NA50 Collaboration
The J/$\psi$ production in 158 A GeV Pb-Pb interactions is studied, in the dimuon decay channel, as a function of centrality, as measured with the electromagnetic or, alternatively, with the very forward hadronic calorimeters. After a first sharp variation at mid- centrality, both patterns continue to fall down and-exhibit a curvature change at high centrality values. [...]
2003
- Published in : Pramana - J. Phys. 60 (2003) 817-28
In : 4th International Conference on Physics and Astrophysics of Quark-Gluon Plasma, Jaipur, India, 26 - 30 Nov 2001, pp.817-28
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