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Article
High p(T) direct photon and pi(0) triggered azimuthal jet correlations and measurement of k(T) for isolated direct photons in p plus p collisions at root s=200 GeV
Physical Review D
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
10-4-2010
DOI
10.1103/PhysRevD.82.072001
Abstract
Correlations of charged hadrons of 1< p(T) < 10 Gev/c with high pT direct photons and pi(0) mesons in the range 5< p(T) < 15 Gev/c are used to study jet fragmentation in the gamma + jet and dijet channels, respectively. The magnitude of the partonic transverse momentum, k(T), is obtained by comparing to a model incorporating a Gaussian kT smearing. The sensitivity of the associated charged hadron spectra to the underlying fragmentation function is tested and the data are compared to calculations using recent global fit results. The shape of the direct photon-associated hadron spectrum as well as its charge asymmetry are found to be consistent with a sample dominated by quark-gluon Compton scattering. No significant evidence of fragmentation photon correlated production is observed within experimental uncertainties.
Copyright Owner
American Physical Society
Copyright Date
2010
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Nathan C. Grau, John C. Hill, Todd Kempel, et al.. "High p(T) direct photon and pi(0) triggered azimuthal jet correlations and measurement of k(T) for isolated direct photons in p plus p collisions at root s=200 GeV" Physical Review D Vol. 82 Iss. 7 (2010) p. 072001 Available at: http://works.bepress.com/craig-ogilvie/159/
This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Yasuyuki Akiba, H. Al-Bataineh, J. Alexander et al. "High p T direct photon and π 0 triggered azimuthal jet correlations and measurement of k T for isolated direct photons in p+ p collisions at s= 200 GeV." Physical Review D 82, no. 7 (2010): 072001. DOI:10.1103/PhysRevD.82.072001. Posted with permission.