  The production of omega-mesons in the pp->pp omega reaction has been
investigated with the COSY-ANKE spectrometer for excess energies of 60 and
92MeV by detecting the two final protons and reconstructing their missing mass.
The large multipion background was subtracted using an event-by-event
transformation of the proton momenta between the two energies. Differential
distributions and total cross sections were obtained after careful studies of
possible systematic uncertainties in the overall ANKE acceptance. The results
are compared with the predictions of theoretical models. Combined with data on
the phi-meson, a more refined estimate is made of the Okubo-Zweig-Iizuka rule
violation in the phi/omega production ratio.
