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Article
Direct photon production in d+Au collisions at root s(NN)=200 GeV
Physical Review C
Document Type
Article
Publication Version
Published Version
Publication Date
5-17-2013
DOI
10.1103/PhysRevC.87.054907
Abstract
Direct photons have been measured in root s(NN) = 200 GeV d + Au collisions at midrapidity. A wide p(T) range is covered by measurements of nearly real virtual photons (1 < p(T) < 6 GeV/c) and real photons (5 < p(T) < 16 GeV/c). The invariant yield of the direct photons in d + Au collisions over the scaled p + p cross section is consistent with unity. Theoretical calculations assuming standard cold-nuclear-matter effects describe the data well for the entire p(T) range. This indicates that the large enhancement of direct photons observed in Au + Au collisions for 1.0 < p(T) < 2.5 GeV/c is attributable to a source other than the initial-state nuclear effects.
Copyright Owner
American Physical Society
Copyright Date
2013
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Sergey Belikov, Paul Constantin, Alan Dion, et al.. "Direct photon production in d+Au collisions at root s(NN)=200 GeV" Physical Review C Vol. 87 Iss. 5 (2013) p. 054907 Available at: http://works.bepress.com/craig-ogilvie/77/
This is an article from Physical Review C 87 (2013): 054907-1, doi:10.1103/PhysRevC.87.054907. Posted with permission.