J/{psi} production in Au+Au and Cu+Cu collisions at {radical}(s){sub NN}=200 GeV and the threshold model

Journal Article · Sun Apr 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.044902· OSTI ID:20995221

Chaudhuri, A K ^[1]

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1. Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700 064 (India)

Using the quark gluon plasma (QGP) motivated threshold model, where all the J/{psi}'s are suppressed above a threshold density, we have analyzed the recent PHENIX data on the participant number dependence of the nuclear modification factor for J/{psi}'s, in Au+Au collisions, at RHIC energy, {radical}(s){sub NN}=200 GeV. Centrality dependence of midrapidity J/{psi} suppression in Au+Au collisions are well explained in the model for threshold density n{sub c}{approx_equal}3.6 fm{sup -2}. PHENIX data on J/{psi} suppression at forward rapidity data are not explained in the model. The analysis strongly supports deconfined matter formation in central Au+Au collisions at midrapidity. We have also analyzed the preliminary PHENIX data on J/{psi} suppression in Cu+Cu collisions. Cu+Cu data are not explained in the threshold model.

• OSTI ID: 20995221
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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COLLISIONS
DENSITY
GEV RANGE 100-1000
INHIBITION
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PARTICLE RAPIDITY
QUARK MATTER