$J/\psi$ suppression in Pb-Pb collisions at CERN SPS

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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). In fact it was predicted th...

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Detalles Bibliográficos
Autores principales: Prino, Francesco, Abreu, M.C., Alessandro, B., Alexa, C., Arnaldi, R., Ataian, M., Baglin, C., Baldit, A., Bedjidian, M., Beole, S., Boldea, V., Bordalo, P., Bussiere, A., Capelli, L., Casagrande, L., Castor, J., Chambon, T., Chaurand, B., Chevrot, I., Cheynis, B., Chiavassa, E., Cicalo, C., Claudino, T., Comets, M.P., Constans, N., Constantinescu, S., De Marco, N., De Falco, A., Dellacasa, G., Devaux, A., Dita, S., Drapier, O., Ducroux, L., Espagnon, B., Fargeix, J., Force, P., Gallio, M., Gavrilov, Y.K., Gerschel, C., Giubellino, P., Golubeva, M.B., Gonin, M., Grigorian, A.A., Grossiord, J.Y., Guber, F.F., Guichard, A., Gulkanian, H., Hakobian, R., Haroutunian, R., Idzik, M., Jouan, D., Karavitcheva, T.L., Kluberg, L., Kurepin, A.B., Le Bornec, Y., Lourenco, C., Macciotta, P., MacCormick, M., Marzari-Chiesa, A., Masera, M., Masoni, A., Mehrabian, S., Monteno, M., Musso, A., Petiau, P., Piccotti, A., Pizzi, J.R., Puddu, G., Quintans, C., Ramos, S., Ramello, L., Rato Mendes, P., Riccati, L., Romana, A., Ropotar, I., Saturnini, P., Scomparin, E., Serci, S., Shahoian, R., Silva, S., Sitta, M., Soave, C., Sonderegger, P., Tarrago, X., Topilskaya, N.S., Usai, G.L., Vercellin, E., Villatte, L., Willis, N.
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/485362
Descripción
Sumario: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). In fact it was predicted 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 in central collisions and the observed pattern can be considered as a strong indication for QGP production.

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