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CERN Document Server Znaleziono 2,049 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.43 sekund. 
1.
(100)
The J/$\psi$ normal nuclear absorption / NA50 Collaboration
We present a new determination of the ratio of cross-sections ($J/\psi$) /DY as expected for nucleus-nucleus reactions if J/psi would only be normally absorbed by nuclear matter. This anticipated behaviour is based on proton-nucleus data exclusively, and compared, as a function of centrality, with updated S-U results from experiment NA38 and with the most recent Pb-Pb results from experiment NA50..
2005 - Published in : Eur. Phys. J. C 43 (2005) 161-5
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2.
(91)
J/$\psi$ suppression in Pb+Pb collisions at CERN SPS / Abreu, M C ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Ataian, M R ; Baglin, C ; Baldit, A ; Bedjidian, Marc ; Beolè, S ; Boldea, V et al.
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. [...]
2001
In : 30th International Symposium on Multiparticle Dynamics, Tihany, Lake Balaton, Hungary, 9 - 15 Oct 2000, pp.492-500
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3.
(80)
Charmonia suppression in nucleus-nucleus interactions at CERN SPS / Arnaldi, R ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Atayan, M ; Baglin, C ; Baldit, A ; Bedjidian, M ; Beolè, S ; Boldea, V et al.
The NA50 experiment at CERN SPS has studied charmonium production in Pb-Pb collisions at 158 GeV/c per nucleon. According to the theoretical predictions the observation of the suppression of the $J/\psi$ production yield is expected to be an unambiguous probe for a phase transition from ordinary nuclear matter towards a state in which quarks and gluons are deconfined. [...]
2004 - Published in : Acta Phys. Hung. A 19 (2004) 337-41
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4.
(69)
Centrality behaviour of J/$\psi$ production in NA50 / NA50 Collaboration
The J/$\psi$ production in 158 A GeV Pb-Pb interactions is studied, in the dimuon decay channel, as a function of centrality, as measured with the electromagnetic or with the very forward calorimeters. After a first sharp variation at midcentrality, both patterns continue to fall down and exhibit a curvature change at high centrality values. [...]
2002
In : 31st International Symposium on Multiparticle Dynamics, Datong, China, 1 - 7 Sep 2001, pp.127-31
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5.
(66)
Recent results on J/$\psi$ from experiment NA50 / NA50 Collaboration
The J/$\psi$ production in Pb-Pb interactions induced by 158 GeV/c incident Pb ions is studied as a function of centrality, as estimated from the neutral transverse energy or, alternatively, from the very forward hadronic energy of the collision. The J/$\psi$ yield exhibits a similar pattern with a first drop for mid-peripheral collisions and a steady decrease for the most central reactions. [...]
2002 - Published in : Nucl. Phys. A 698 (2002) 127C-34C
In : 15th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions, Stony Brook, NY, USA, 15 - 20 Jan 2001, pp.127C-34C
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6.
(65)
Study of deconfinement in NA50 / NA50 Collaboration
The J/$\psi$ production in 158 A GeV Pb-Pb interactions is studied, in the dimuon decay channel, as a function of centrality, as measured with the electromagnetic or, alternatively, with the very forward hadronic calorimeters. After a first sharp variation at mid- centrality, both patterns continue to fall down and-exhibit a curvature change at high centrality values. [...]
2003 - Published in : Pramana - J. Phys. 60 (2003) 817-28
In : 4th International Conference on Physics and Astrophysics of Quark-Gluon Plasma, Jaipur, India, 26 - 30 Nov 2001, pp.817-28
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7.
(64)
Evidence for deconfinement from the J/$\psi$ suppression pattern in Pb- Pb collisions by the NA50 experiment / Abreu, M C ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Ataian, M R ; Baglin, C ; Baldit, A ; Bedjidian, Marc ; Beolè, S ; Boldea, V et al.
The NA50 experiment at CERN has found evidence for deconfinement in central Pb-Pb collisions at 158 A GeV/c at the CERN SPS. The anomalous (with respect to ordinary nuclear absorption) suppression of J/$\psi$ has been observed in 1995 and 1996 data and has been confirmed with the 1998 data analysis, where a detailed study of the suppression pattern vs. [...]
2002
In : Conference on Quark Confinement and the Hadron Spectrum Iv, Vienna, Austria, 3 - 8 Jul 2000, pp.357-360
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8.
(64)
Study of $J/\psi$ suppression in Pb-Pb collisions at the CERN SPS / NA50 Collaboration
We report on a search for a phase transition from ordinary nuclear matter to a state of deconfined quarks and gluons as predicted by lattice QCD calculations. One of the most clean signatures of this state of matter is predicted to be the suppression of the J/$\psi$ production. [...]
Geneva : CERN, 2000
In : International Europhysics Conference on High-Energy Physics, Tampere, Finland, 15 - 21 Jul 1999, pp.959-61
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9.
(63)
Charmonia and Drell-Yan production in proton-nucleus collisions at the CERN SPS / NA50 Collaboration
Charmonium production in p-A collisions is a unique tool for the study of the interaction of bound ccbar in nuclear matter. It can provide details on the basic features of the resonance formation mechanism and, in particular, on its non-perturbative aspects. [...]
CERN-EP-2002-100.- Geneva : CERN, 2003 - 22 p. - Published in : Phys. Lett. B 553 (2003) 167-78 Fulltext: ep-2002-100_fig7 - PS.GZ; ep-2002-100_fig6 - PS.GZ; ep-2002-100_fig5 - PS.GZ; ep-2002-100_fig4 - PS.GZ; ep-2002-100_fig3 - PS.GZ; ep-2002-100_fig2 - PS.GZ; ep-2002-100 - PDF; ep-2002-100_fig8 - PS.GZ; ep-2002-100_fig1b - PS.GZ; ep-2002-100_fig1a - PS.GZ; - CERN library copies
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10.
(62)
Charmonium production in Pb-Pb collisions / De Marco, N ; Abreu, M C ; Alessandro, B ; Alexa, C ; Arnaldi, R ; Astruc, J ; Atayan, M ; Baglin, C ; Baldit, A ; Bedjidian, Marc et al.
The NA50 Collaboration studies the J/psi, psi' and Drell-Yan production via their dimuon decay in Pb-Pb interactions at 158 GeV per nucleon at the CERN SPS: the most recent results on charmonium production are presented here..
Geneva : CERN, 2000 - Published in : Czechoslov. J. Phys. 50 (2000) 114-19
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