arXiv:0809.0846·v2·High Energy Physics — Phenomenology
Direct photon production at HERA, the Tevatron and the LHC
R.E. Blair🇺🇸 · S.Chekanov🇺🇸 · G.Heinrich🇬🇧 · A.Lipatov🇷🇺 · N.Zotov🇷🇺
Abstract
We review several most recent prompt-photon measurements at HERA and the Tevatron and discuss their implication for future measurements at the LHC. A comparison to Monte Carlo models, as well as to NLO QCD predictions based on the standard DGLAP and the kT-factorization approaches is discussed. Effects from renormalization and factorization scale uncertainties, as well as uncertainties on the gluon density distribution inside a proton are discussed.
Comments: 16 pages, 18 figures, Proceedings of the HERA-LHC workshop (CERN-DESY), 2007-2008