Article
J/psi production in Au-Au collisions at root s(NN)=200 GeV
Physical Review C
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2004
DOI
10.1103/PhysRevC.69.014901
Abstract
First results on charm quarkonia production in heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The yield of J/psi's measured in the PHENIX experiment via electron-positron decay pairs at midrapidity for Au-Au reactions at roots(NN) = 200 GeV is analyzed as a function of collision centrality. For this analysis we have studied 49.3x10(6) minimum bias Au-Au reactions. We present the J/psi invariant yield dN/dy for peripheral and midcentral reactions. For the most central collisions where we observe no signal above background, we quote 90% confidence level upper limits. We compare these results with our J/psi measurement from proton-proton reactions at the same energy. We find that our measurements are not consistent with models that predict strong enhancement relative to binary collision scaling.
Copyright Owner
American Physical Society
Copyright Date
2004
Language
en
File Format
application/pdf
Citation Information
S. S. Adler, Sergey Belikov, S. Bhagavatula, Paul Constantin, et al.. "J/psi production in Au-Au collisions at root s(NN)=200 GeV" Physical Review C Vol. 69 Iss. 1 (2004) p. 014901 Available at: http://works.bepress.com/craig-ogilvie/172/
This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "J∕ ψ production in Au-Au collisions at s N N= 200 GeV." Physical Review C 69, no. 1 (2004): 014901. DOI:10.1103/PhysRevC.69.014901. Posted with permission.