CERN Accelerating science

Article
Title J/$\psi$ production in proton-nucleus and nucleus-nucleus interactions at the CERN SPS
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 ; Borges, G ; Bussière, A ; Capelli, L ; Castanier, C ; Castor, J I ; Chaurand, B ; Chevrot, I ; Cheynis, B ; Chiavassa, E ; Cicalò, C ; Claudino, T ; Comets, M P ; Constans, N ; Constantinescu, S ; Cortese, P ; De Falco, A ; De Marco, N ; Dellacasa, G ; Devaux, A ; Dita, S ; Drapier, O ; Ducroux, L ; Espagnon, B ; Fargeix, J ; Force, P ; Gallio, M ; Gavrilov, Yu K ; Gerschel, C ; Giubellino, 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 ; Prado da Silva, W L ; Prino, F ; Puddu, G ; Quintans, C ; Ramello, L ; Ramos, S ; Rato-Mendes, P ; Riccati, L ; Romana, A ; Santos, H ; Saturnini, P ; 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 (Univ. Piemonte Orientale Alessandria) ; (INFN Torino) ; (LAPP Annecy) ; (LPC, Univ. Blaise Pascal) ; (CNRS-IN2P3, Aubière) ; (IFA, Bucharest) ; (Cagliari Univ.) ; (INFN Cagliari) ; (CERN) ; (LIP, Lisbon) ; (INR, Moscow) ; (IPN, Univ. Paris-Sud) ; (CNRS-IN2P3, Orsay) ; (IRS, Univ. Louis-Pasteur) ; (CNRS-IN2P3, Strasbourg) ; (Torino Univ.) ; (IPN, Univ. Claude Bernard,Lyon I) ; (CNRS-IN2P3, Villeurbanne) ; (YerPhI, Yerevan) ; (FCT, Univ. Algarve, Faro) ; (IST, Tec. Univ. Lisboa) ; (Fac. Phys. Nucl. Tech., Cracow) ; (UERJ, Rio de Janeiro)
Publication 2002
Imprint 2002
In: 30th International Workshop on Gross Properties of Nuclei and Nuclear Excitations : Ultrarelativistic Heavy Ion Collisions, Hirschegg, Austria, 13 - 19 Jan 2002, pp.254-263
Subject category Particle Physics
Accelerator/Facility, Experiment CERN SPS ; NA50
Abstract The NA38 and NA50 experiments at the CERN SPS have measured charmonium production in different colliding systems with the aim of observing a phase transition from ordinary hadronic matter towards a state in which quarks and gluons are deconfined (quark-gluon plasma, QGP). This experimental research is based on the prediction that the J/$\psi$ yield should be suppressed in deconfined matter. The analysis of the data collected by the NA50 experiment with Pb-Pb collisions at 158 GeV/c per nucleon shows that the J/$\psi$ is anomalously suppressed with respect to the pattern observed in proton-nucleus and light ion reactions. (9 refs).



 Record created 2002-06-21, last modified 2018-06-18