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Measurement of Prompt Photon Production in gamma-p Interactions |
| Reference |
Publication (H1prelim-03-035) is expected before DIS2004, Spring 2004 |
| Figures |
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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. |
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