Abstract

The contribution of resolved photons to the photoproduction cross section of direct photons is reexamined. Higher order,O(α2αs), QCD corrections to this contribution are calculated and turn out to be important at HERA energies. The observation of direct photons in the medium-p⊥ range (p⊥∼5 GeV/c) should provide the opportunity to measure the gluon content of the photon.

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