2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37584Results are presented on the production of isolated prompt photons in photoproduction (virtuality Q^2 < 1 GeV^2) and in deep inelastic scattering (Q^2 > 35 GeV^2). The results are reasonably well described by pQCD calculations in next to leading order. Comparisons to the Monte Carlo models PYTHIA and HERWIG are also presented.5 pages, talk at DIS03 at St. Petersburg, April 2003High Energy Physics - ExperimentPrompt Photon Production at HERAtext