Article
Measurement of direct photon production in p+p collisions at root s=200 GeV
Physical Review Letters
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
1-1-2007
DOI
10.1103/PhysRevLett.98.012002
Abstract
Cross sections for midrapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for transverse momenta of 3 < p(T)< 16 GeV/c. Next-to-leading order perturbative QCD (pQCD) describes the data well for p(T)> 5 GeV/c, where the uncertainties of the measurement and theory are comparable. We also report on the effect of requiring the photons to be isolated from parton jet energy. The observed fraction of isolated photons is well described by pQCD for p(T)> 7 GeV/c.
Copyright Owner
American Physical Society
Copyright Date
2007
Language
en
File Format
application/pdf
Citation Information
S. S. Adler, Sergey Belikov, Paul Constantin, Nathan C. Grau, et al.. "Measurement of direct photon production in p+p collisions at root s=200 GeV" Physical Review Letters Vol. 98 Iss. 1 (2007) p. 012002 Available at: http://works.bepress.com/craig-ogilvie/181/
This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, A. Al-Jamel, J. Alexander et al. "Measurement of direct photon production in p+ p collisions at s= 200 GeV." Physical review letters 98, no. 1 (2007): 012002. DOI:10.1103/PhysRevLett.98.012002. Posted with permission.