Study of the d-eta interaction via dp->dp eta reaction.

C.Piskor-Ignatowicz for the COSY-11-Collaboration
Institute of Physics, Jagellonian University, Cracow, PL-30-059, Poland

Recently the deuteron-eta interaction was intensively studied on theoretical ground. This topic is of special interest due to the possible existence of eta-nucleus bound or quasibound states. The COSY-11 collaboration preformed measurements of the near-threshold eta meson production in the dp->dp eta reaction. The aim of the experiment was the investigation of the d-eta interaction by studying the energy dependence of the total reaction cross section as well as Dalitz plot distributions for the final state particles. Measurements were performed for four excess energies in the range from 0.2 MeV to 9.6 MeV. The momenta of the outgoing protons and deuterons were registered with the COSY-11 detection system and the eta-mesons were identified via the missing mass method. Preliminary results of these measurements will be presented.