The cross section for the production of ω mesons in proton-proton collisions has been measured in a previously unexplored region of incident energies. Cross sections of σ = (7.5 ± 1.9) µb and σ = (30.8 ± 3.4) µb (with 20% systematic uncertainties) were extracted at ǫ = 92 MeV and 173 MeV excess energy above the ω threshold, respectively. The angular distribution of the ω at ǫ = 173 MeV is strongly anisotropic,
The reaction pp → ppη was measured at excess energies of 15 and 41 MeV at an external target of the Jülich Cooler Synchrotron COSY with the Time of Flight Spectrometer. About 25000 events were measured for the excess energy of 15 MeV and about 8000 for 41 MeV. Both protons of the process ppη were detected with an acceptance of nearly 100 % and the η was reconstructed by the missing mass technique. For both excess energies the angular distributions are found to be nearly isotropic. In the invariant mass *
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