Prompt Photons in Photoproduction at HERA
High Energy Physics - Experiment
2007-05-23 v1
Abstract
First inclusive measurements of isolated prompt photons in photoproduction at HERA have been made with the ZEUS detector. Cross sections are given as a function of the pseudorapidity and the transverse energy of the photon, for E_T^gamma > 5 GeV in the gamma-p centre-of-mass energy range 134-285 GeV. Comparisons are made with predictions from LO Monte Carlo models and NLO QCD calculations. For forward eta^gamma (proton direction) good agreement is found, but in the rear direction all predictions fall below the data.
Cite
@article{arxiv.hep-ex/0008011,
title = {Prompt Photons in Photoproduction at HERA},
author = {Sung-Won Lee},
journal= {arXiv preprint arXiv:hep-ex/0008011},
year = {2007}
}
Comments
for the ZEUS Collaboration; Talk given at the 8th International Workshop on Deep Inelastic Scattering and QCD (DIS'2000), Liverpool, UK, April 25-30, 2000