Eur. Phys. J. C (2004) 34: 191-199
https://doi.org/10.1140/epjc/s2004-01646-3

theoretical physics

Isolated photon plus jet photoproduction as a toolto constrain the gluon distribution in the proton and the photon

¹ Laboratoire de Physique Théorique, UMR 8627 CNRS, Université Paris XI, Bâtiment 210, 91405, Orsay Cedex, France
² II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany

Abstract

We analyse how the reaction can serve to constrain the gluon distributions. Our results are based on a code of partonic event generator type which includes full NLO corrections. We conclude that there are phase space domains in which either the gluon in the photon or the gluon in the proton give important contributions to the cross section, which should be observable in HERA experiments.