Charmonia suppression in p-A collisions at 450 GeV/c: new results from NA50

Drell-Yan, J/$\psi$ and $\psi^{\prime}$ production in proton-induced collisions on Be, Al, Cu, Ag and W targets has been studied by the NA50 collaboration at the CERN SPS. Results on absolute cross sections and cross section ratios are presented. We show that J/$\psi$ suppression in proton-nucleus a...

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Detalles Bibliográficos
Autores principales: Abreu, M C, Alessandro, B, Alexa, C, Arnaldi, R, Ataian, M R, Baglin, C, Baldit, A, Bedjidian, Marc, Beolè, S, Boldea, V, Bordab, P, Borenstein, S R, Borges, G, Bussière, A, Capelli, L, Castor, J I, Castanier, C, Chaurand, B, Cheynis, B, Chiavassa, E, Cicalò, C, Claudino, T, Comets, M P, Constans, N, Constantinescu, S, Cortese, P, Cruz, J, De Marco, N, De Falco, A, Dellacasa, G, Devaux, A, Dita, S, Drapier, O, Espagnon, B, Fargeix, J, Force, P, Callio, M, Gavrilov, Yu K, Gerschel, C, Giubellino, P, Golubeva, M B, Gonin, M, Grigorian, A A, Grigorian, S, 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, Ramos, S, Ramello, L, Rato-Mendes, P, Riccati, L, Romana, A, Santos, H, Saturnini, P, Scalas, E, Scomparin, E, Serci, S, Shahoyan, R, Sigaudo, F, Silvar, S, Sitta, M, Sonderegger, P, Tarrago, X, Topilskaya, N S, Usai, G L, Vercellin, Ermanno, Villatte, L, Willis, N
Lenguaje:eng
Publicado: 2002
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(01)01424-5
http://cds.cern.ch/record/544428
Descripción
Sumario:Drell-Yan, J/$\psi$ and $\psi^{\prime}$ production in proton-induced collisions on Be, Al, Cu, Ag and W targets has been studied by the NA50 collaboration at the CERN SPS. Results on absolute cross sections and cross section ratios are presented. We show that J/$\psi$ suppression in proton-nucleus and in sulphur-uranium collisions can be understood in terms of nuclear absorption and there is no indication of an additional suppression mechanism in S-U collisions compared to p-A. (11 refs).

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