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Inclusive Prompt photon production at HERA |
| Reference |
G Grindhammer, talk at ICHEP 2002, July 2002 |
| Document |
Conference paper
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| Figures |
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| Contact |
J Gayler |
| Abstract |
Inclusive prompt photons are measured in photoproduction at HERA. Cross sections are presented as a function of transverse energy E_t^gamma and pseudorapidity eta^gamma for E_t^gamma > 5 GeV and -1 < eta^gamma < 0.9 in the gamma p center of mass energy range 142 < W < 266 GeV. The data were taken with the H1 detector in the years 1996-2000. After selection of prompt photon candidates, a sizable amount of background from pi^0 mesons remains and the gamma signal is extracted by a likelihood technique using calorimetric shower shape variables. The results are compared to a NLO-QCD calculation and to the PYTHIA event generator. |
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