Photon-jet correlations and constraints on fragmentation functions

Z. Belghobsi, M. Fontannaz, J.-Ph. Guillet, G. Heinrich, E. Pilon, M. Werlen
2009 Physical Review D  
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.
doi:10.1103/physrevd.79.114024 fatcat:advzqw6lgbeptccmxg4rdwygvm