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Measurement of prompt photon production in gamma-p Interactions |
| Reference |
G Grindhammer, talk at ICHEP02, (inclusive), R Lemrani, talk at DIS 2003 (with jet), Spring 2003 |
| Document |
Conference paper
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| Contact |
J Gayler |
| Abstract |
Results are presented on the photo-production of prompt photons, both inclusively and associated with jets in the $\gamma p$ center of mass energy range 142 < W < 266 GeV. The cross sections are given for the transverse momentum and pseudorapidity ranges of the photons 5 < E_T^gamma < 10 GeV, -1 < eta^\gamma < 0.9 and for the associated jets in the range E_T^jet > 4.5 GeV, -1 < eta^jet < 2.3 as a function of E_T^gamma, eta^\gamma, E_T^jet, eta^jet, x_gamma and x_p, where x_gamma and x_p correspond to the energy fractions of the exchanged photon and proton, respectively, participating in the hard process. The results are reasonably well described by pQCD calculations in next to leading order. The data were taken at HERA in the years 1996-2000, corresponding to an integrated luminosity of 105 pb^-1. |
| Comments | Extension of earlier results on inclusive prompt photons |
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