Article
Deuteron and antideuteron production in Au+Au collisions at root s(NN)=200 GeV
Physical Review Letters
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
4-1-2005
DOI
10.1103/PhysRevLett.94.122302
Abstract
The production of deuterons and antideuterons in the transverse momentum range 1.1 < p(T)< 4.3 GeV/c at midrapidity in Au+Au collisions at root s(NN) = 200 GeV has been studied by the PHENIX experiment at RHIC. A coalescence analysis, comparing the deuteron and antideuteron spectra with that of proton and antiproton, has been performed. The coalescence probability is equal for both deuterons and antideuterons and it increases as a function of p(T), which is consistent with an expanding collision zone. Comparing (anti)proton yields, (p) over bar /p = 0.73 +/- 0.01, with (anti)deuteron yields, (d) over bar /d = 0.47 +/- 0.03, we estimate that (n) over bar /n = 0.64 +/- 0.04. The nucleon phase space density is estimated from the coalescence measurement.
Copyright Owner
American Physical Society
Copyright Date
2005
Language
en
File Format
application/pdf
Citation Information
S. S. Adler, Sergey Belikov, S. Bhagavatula, Paul Constantin, et al.. "Deuteron and antideuteron production in Au+Au collisions at root s(NN)=200 GeV" Physical Review Letters Vol. 94 Iss. 12 (2005) p. 122302 Available at: http://works.bepress.com/craig-ogilvie/248/
This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Deuteron and Antideuteron Production in Au+ Au Collisions at s N N= 200 GeV." Physical review letters 94, no. 12 (2005): 122302. DOI: 10.1103/PhysRevLett.94.122302. Posted with permission.