Photon - Jet Correlations and Constraints on Fragmentation Functions
arXiv:0903.4834 · doi:10.1103/PhysRevD.79.114024
Abstract
We study the production of a large-pT photon in association with a jet in proton-proton collisions. We examine the sensitivity of the jet rapidity distribution to the gluon distribution function in the proton. We then assess the sensitivity of various photon + jet correlation observables to the photon fragmentation functions. We argue that RHIC data on photon-jet correlations can be used to constrain the photon fragmentation functions in a region which was barely accessible in LEP experiments.
23 pages, 9 figures