Searching for QGP: the J/ψ probe in the NA50/CERN experiment.

Authors :: Abreu, M. C.
Alessandro, B.
Alexa, C.
Arnaldi, R.
Atayan, M.
Baglin, C.
Baldit, A.
Bedjidian, M.
Beole`, S.
Boldea, V.
Bordalo, P.
Bussie`re, A.
Capelli, L.
Casagrande, L.
Castor, J.
Chambon, T.
Chaurand, B.
Chevrot, I.
Cheynis, B.
Chiavassa, E.
Source :: AIP Conference Proceedings. 2000, Vol. 549 Issue 1, p341. 5p.
Publication Year :: 2000
Abstract: Abstract. The J/ψ production in 158 A GeV Pb-Pb interactions is studied as a function of centrality. Its pattern, after a first sharp variation around E[sub T]= 40 GeV, continues to fall down and exhibits a curvature change around E[sub T]= 90 GeV. This trend excludes any conventional hadronic model and is in agreement with a deconfined quark-gluon phase scenario. [ABSTRACT FROM AUTHOR]