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Article
Title Recent results on J/$\psi$ from experiment NA50
Author(s)

Abreu, M C ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Ataian, M R ; Baglin, C ; Baldit, A ; Bedjidian, Marc ; Beolè, S ; Boldea, V ; Bordalo, P ; Borenstein, S R ; Borges, C ; Bussière, A ; Capelli, L ; Castagner, C ; Castor, J I ; Chaurand, B ; Cheynis, B ; Chiavassa, E ; Cicalò, C ; Claudino, T ; Comets, M P ; Constans, N ; Constantinescu, S ; Cortese, P ; Cruz, J ; De Falco, A ; Dellacasa, G ; De Marco, N ; Devaux, A ; Dita, S ; Drapier, O ; Espagnon, B ; Fargeix, J ; Force, P ; Gallio, M ; Gavrilov, Yu K ; Gerschel, C ; Glubellino, P ; Golubeva, M B ; Gonin, M ; Grigorian, A A ; Grossiord, J Y ; Guber, F F ; Guichard, A ; Gulkanian, H R ; Hakobyan, R S ; Haroutunian, R ; Idzik, M ; Jouan, D ; Karavitcheva, T L ; Kluberg, L ; Kurepin, A B ; Le Bornec, Y ; Lourenço, C ; Macciotta, P ; MacCormick, M ; Marzari-Chiesa, A ; Masera, M ; Masoni, A ; Monteno, M ; Musso, A ; Petiau, P ; Piccotti, A ; Pizzi, J R ; Da Silva, W ; Prino, F ; Puddu, G ; Quintans, C ; Ramos, S ; Ramello, L ; Rato-Mendes, P ; Riccati, L ; Romana, A ; Saturnini, P ; Santos, H ; Scalas, E ; Scomparin, E ; Serci, S ; Shahoyan, R ; Sigaudo, F ; Silva, S ; Sitta, M ; Sonderegger, P ; Tarrago, X ; Topilskaya, N S ; Usai, G L ; Vercellin, Ermanno ; Villatte, L ; Willis, N

Affiliation (Geneva)
Publication 2002
In: Nucl. Phys. A 698 (2002) 127C-34C
In: 15th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions, Stony Brook, NY, USA, 15 - 20 Jan 2001, pp.127C-34C
DOI 10.1016/S0375-9474(01)01356-2
Subject category Nuclear Physics
Accelerator/Facility, Experiment CERN SPS ; NA50
Abstract The J/$\psi$ production in Pb-Pb interactions induced by 158 GeV/c incident Pb ions is studied as a function of centrality, as estimated from the neutral transverse energy or, alternatively, from the very forward hadronic energy of the collision. The J/$\psi$ yield exhibits a similar pattern with a first drop for mid-peripheral collisions and a steady decrease for the most central reactions. Conventional hadronic models axe unable to fairly reproduce this trend which finds a natural explanation in a deconfined quark-gluon phase scenario. The J/$\psi$ transverse momentum distributions and their dependence with centrality are also reviewed in this presentation. (20 refs).

Corresponding record in: Inspire


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