| Autor: |
R. Kossakowski, S. Mourgues, Alberto Masoni, Carlos Lourenco, L. Kluberg, N.S. Topilskaya, N. Willis, Serban Constantinescu, R. Shaoian, A. Devaux, J.-Y. Grossiord, B. Espagnon, F. Ohlsson-Malek, G. L. Usai, G. Dellacasa, Ph. Gorodetzky, Wladyslaw Dabrowski, Sanda Dita, D. Jouan, A. Piccotti, R. Haroutunian, Paolo Giubellino, T. Chambon, I. Chevrot, C. Baglin, M. Masera, E. Chiavassa, X. Tarrago, M. Bedjidian, F.F. Guber, P. Rato-Mendes, S. Serci, J.-R. Pizzi, B. Chaurand, L. Riccati, A. Borhani, V. Boldea, Bruno Alessandro, M. Ceru, C. Gerschel, L. Luquin, Luciano Ramello, J. Astruc, P. Macciotta, A. Bussiere, Marek Idzik, Ermanno Vercellin, A. Musso, J. Fargeix, A. De Falco, M.B. Golubeva, A. Marzari-Chiesa, C. Racca, F. Bellaiche, M.S. Sartori, P. Guaita, S. Ramos, P. Saturnini, P. Force, A. Romana, A. Baldit, Calin Alexa, G. Puddu, P. Petiau, M. Gallio, A. Guichard, Y. Le Bornec, G. Landaud, P. Sonderegger, M.C. Abreu, François Fleuret, Y.K. Gavrilov, T.L. Karavitcheva, M. Gonin, Enrico Scomparin, P. Bordalo, Alexey Kurepin, S. Beole, W. L. Prado Da Silva, J. Castor, N. De Marco, Corrado Cicalo, S. Silva, V. Capony, Brigitte Cheynis, O. Drapier, Petar Temnikov |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
Nuclear Physics A. 610:404-417 |
| ISSN: |
0375-9474 |
| Popis: |
Cross sections for J ψ,ψ′ and Drell-Yan production in Pb+Pb collisions at 158×A GeV/c are presented and compared with results obtained by the NA38 and NA51 collaborations. The Pb+Pb data have been collected by the NA50 collaboration using the NA38 dimuon spectrometer. The Drell-Yan mechanism is found to scale as (Aprojectile · Btarget) in p+Btarget and Aprojectile+Btarget collisions including Pb+Pb collisions. Regarding J ψ , an anomalous suppression is observed in Pb+Pb collisions with respect to the suppression observed in p+Btarget, O+Btarget and S+U collisions. The cross section ratios ψ′ ( J ψ ) are similar in Pb+Pb and S+U collisions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect 