Expectations for two- and three-jet events at HERA

We calculate cross-sections for two- and three-jet events ine ^? p collisions at (sqrt s ) =314 GeV. We include contributions from point-like photon interactions, as well as contributions from when the photon is resolved into constituent quarks and gluons. It is shown that measurements of the angular distribution of the dijet system in two-jet events as a function of the dijet mass will assist in the separation of these two components. Aside from being a direct test of QCD photoproduction subprocesses, measurement of these events will yield information on the hadronic structure of the photon.