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Article
Spectra and ratios of identified particles in Au plus Au and d plus Au collisions at root s(NN)=200 GeV
Physical Review C
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
8-22-2013
DOI
10.1103/PhysRevC.88.024906
Abstract
The transverse momentum (p(T)) spectra and ratios of identified charged hadrons (pi(+/-), K-+/-, p, (p) over bar) produced in root s(NN) = 200 GeV Au + Au and d + Au collisions are reported in five different centrality classes for each collision species. The measurements of pions and protons are reported up to p(T) = 6 GeV/c (5 GeV/c), and the measurements of kaons are reported up to p(T) = 4 GeV/c (3.5 GeV/c) in Au + Au (d + Au) collisions. In the intermediate p(T) region, between 2 and 5 GeV/c, a significant enhancement of baryon-to-meson ratios compared to those measured in p + p collisions is observed. This enhancement is present in both Au + Au and d + Au collisions and increases as the collisions become more central. We compare a class of peripheral Au + Au collisions with a class of central d + Au collisions which have a comparable number of participating nucleons and binary nucleon-nucleon collisions. The p(T)-dependent particle ratios for these classes display a remarkable similarity, which is then discussed.
Copyright Owner
American Physical Society
Copyright Date
2013
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Alan Dion, John C. Hill, Todd Kempel, et al.. "Spectra and ratios of identified particles in Au plus Au and d plus Au collisions at root s(NN)=200 GeV" Physical Review C Vol. 88 Iss. 2 (2013) p. 024906 Available at: http://works.bepress.com/craig-ogilvie/97/
This is an article from Physical Review C 88 (2013): 024906-1, doi:10.1103/PhysRevC.88.024906. Posted with permission.