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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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Transverse momentum dependence of charmonium suppression in Pb-Pb collisions at the CERN SPS
/ Alessandro, Bruno ; Alexa, C ; Arnaldi, R ; Atayan, M ; Beolè, S ; Boldea, V ; Bordalo, P ; Borges, G ; Castanier, C ; Castor, J et al.
Charmonium suppression in Pb-Pb collisions at 158 GeV/c per nucleon is investigated in detail with the study of the transverse momentum distributions of J/ psi as a function of the centrality of the collision. It is shown that the observed J/ psi suppression in Pb-Pb interactions is particularly significant mainly at low transverse momentum where it strongly depends on centrality. [...]
2005
- Published in : Nucl. Phys. A 749 (2005) 243c-250c
In : 18th Nuclear Physics Division Conference on Phase Transitions In Strongly Interacting Matter, Prague, Czech Republic, 23 - 29 Aug 2004, pp.243c-250c
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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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7.
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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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Formation of Centauro in Pb+Pb collisions at the LHC and their detection with the CASTOR detector of CMS
/ Angelis, A L S ; Aslanoglou, X ; Bartke, Jerzy ; Chileev, K ; Gladysz-Dziadus, E ; Golubeva, M B ; Guber, F F ; Karavitcheva, T L ; Kharlov, Yu V ; Kurepin, A B et al.
We present a phenomenological model describing the formation of a deconfined quark matter fireball in the very forward, baryon-rich rapidity region in nucleus-nucleus interactions, and its subsequent decay into baryons and possibly strangelets. The model explains the centauro events observed in cosmic ray data and the long-penetrating component frequently accompanying them, and makes predictions for the LHC. [...]
2003
- Published in : Nucl. Phys. B, Proc. Suppl. 122 (2003) 205-8
In : 12th International Symposium on Very High Energy Cosmic Ray Interactions, CERN, Geneva, Switzerland, 15 - 20 Jul 2002, pp.205-8
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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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