Summary
At HERA we observed hard scattering in photoproduction events which manifest themselves in the single-charged-particle spectra as well as in the observation of jets. The cross-sections for these processes are measured and they are well described by QCD. The potential of constraining the gluon content in the photon from the jet analysis is demonstrated.
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This work was supported by the Bundesministerium für Forschung und Technologie, Germany and a fellowship of the Graduiertenkolleg «Erzeugung und Zerfälle von Elementarteilchen».
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H1 Collaboration. Hard scattering in photoproduction. Nuov Cim A 107, 2345–2350 (1994). https://doi.org/10.1007/BF02734001
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DOI: https://doi.org/10.1007/BF02734001