HAL Id: in2p3-00007767
http://hal.in2p3.fr/in2p3-00007767
Submitted on 3 Apr 2000
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Anomaly in charmonium suppression in Pb + Pb collisions : final results
M. Gonin, M.C. Abreu, C. Alexa, B. Alessandro, J. Astruc, C. Baglin, A.
Baldit, F. Bellaiche, M. Bedjidian, S. Beole, et al.
To cite this version:
M. Gonin, M.C. Abreu, C. Alexa, B. Alessandro, J. Astruc, et al.. Anomaly in charmonium suppression in Pb + Pb collisions : final results. International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPA-QGP) 3, Mar 1997, Jaipur, India. �in2p3-00007767�
Background
Range of the fit
J/
,
Drell - Yan Open charm
(Drell-Yan) ~ (AprojectileBtarget) 0 < y * < 1
-0.5 < cos( c.s.) < 0.5 200 GeV/c 2.9 < M < 4.5 (GeV)
B (J/ )(NA51+NA38) ~ (AprojectileBtarget) 0 < y * < 1
-0.5 < cos( c.s.) < 0.5 200 GeV/c
* rescaled to 200 GeV/c
A(L) = = 42.8 exp (- L abs) = 0.17 n/fm3
abs = 6.2 0.7 mb