Article
Scaling properties of proton and antiproton production in root s(NN)=200 GeV Au+Au collisions
Physical Review Letters
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
10-1-2003
DOI
10.1103/PhysRevLett.91.172301
Abstract
We report on the yield of protons and antiprotons, as a function of centrality and transverse momentum, in Au+Au collisions at rootS(NN)=200 GeV measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider. In central collisions at intermediate transverse momenta (1.5 < p(T) < 4.5 GeV/c) a significant fraction of all produced particles are protons and antiprotons. They show a centrality-scaling behavior different from that of pions. The (p) over bar/pi and p/pi ratios are enhanced compared to peripheral Au+Au, p+p, and e(+)e(-) collisions. This enhancement is limited to p(T) < 5 GeV/c as deduced from the ratio of charged hadrons to pi(0) measured in the range 1.5 < p (T) < 9 GeV/c.
Copyright Owner
American Physical Society
Copyright Date
2003
Language
en
File Format
application/pdf
Citation Information
S. S. Adler, Sergey Belikov, S. Bhagavatula, Paul Constantin, et al.. "Scaling properties of proton and antiproton production in root s(NN)=200 GeV Au+Au collisions" Physical Review Letters Vol. 91 Iss. 17 (2003) p. 172301 Available at: http://works.bepress.com/craig-ogilvie/215/
This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Scaling Properties of Proton and Antiproton Production in √sNN= 200 GeV Au+ Au Collisions." Physical review letters 91, no. 17 (2003): 172301. DOI:10.1103/PhysRevLett.91.172301. Posted with permission.