Réaction antiproton–proton aux basses énergies (Expérience PS173 au LEAR)

The antiproton–proton interaction has been studied by measuring the elastic scattering, charge exchange, and annihilation cross sections simultaneously, for beam momenta between 180 and 600 MeV/c. Here we describe the experimental setup and present partial results of the experiment. We have not found any evidence of the existence of the X (1935) resonance. It is possible to reproduce the elastic scattering and charge exchange differential cross sections with potential models. The Re f(0)/Im f(0) ratio shows an anomaly at low energy.[Journal Translation]