The Elliptic Flow of Neutral Transverse Energy in Heavy-Ion Interactions at SPS Energies

The threshold effect in the J/$\psi$ suppression seen in the NA50 data in lead on lead interactions at the CERN SPS can't be taken into account by conventional models. Other candidate models use a phase transition, and therefore let suppose that the thermodynamic variables are defined everywher...

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Detalles Bibliográficos
Autores principales: Abreu, M C, Alessandro, B, Alexa, C, Arnaldi, R, Astruc, J, Ataian, M R, Baglin, C, Baldit, A, Bedjidian, Marc, Bellaiche, F G, Beolè, S, Boldea, V, Bordalo, P, Bussière, A, Capelli, L, Capony, V, Casagrande, L, Castor, J I, Chambon, T, Chaurand, B, Chevrot, I, Cheynis, B, Chiavassa, E, Cicalò, C, Comets, M P, Constans, N, Constantinescu, S, Cruz, J, De Falco, A, De Marco, N, Dellacasa, G, Devaux, A, Dita, S, Drapier, O, Ducroux, L, Espagnon, B, Fargeix, J, Filippov, S N, Fleuret, F, 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, Mehrabyan, S S, Monteno, M, Mourgues, S, Musso, A, Ohlsson-Malek, F, Petiau, P, Piccotti, A, Pizzi, J R, Prado da Silva, W L, Puddu, G, Quintans, C, Racca, C, Ramello, L, Ramos, S, Rato-Mendes, P, Riccati, L, Romana, A, Ropotar, I, Saturnini, P, Scomparin, E, Serci, S, Shahoyan, R, Silva, S, Sitta, M, Soave, C, Sonderegger, P, Tarrago, X, Topilskaya, N S, Usai, G L, Vercellin, Ermanno, Villatte, L, Willis, N
Lenguaje:eng
Publicado: 1999
Materias:
Nuclear Physics
Acceso en línea:http://cds.cern.ch/record/431449
Descripción
Sumario:The threshold effect in the J/$\psi$ suppression seen in the NA50 data in lead on lead interactions at the CERN SPS can't be taken into account by conventional models. Other candidate models use a phase transition, and therefore let suppose that the thermodynamic variables are defined everywhere that is the so-called thermalization. The in-plane elliptic flow, which has been proposed in order to probe the thermalization at these beam energies, is found to be actually present in lead on lead interactions at 158 A GeV/c, but can't be observed in sulphur on sulphur at 200 A GeV/c in the NA38 data. (7 refs).

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