Meson Production and Meson Nucleus Interaction Studies at COSY

摘要

GEM is a detector with high spatial and energy resolution making it ideally suited for studies involving meson production close to threshold. The investigations proposed include study of the reaction mechanism of light mesons and the their interaction with nuclei. In a first experiment the p+p o d+ pi ⁺ reaction close to threshold was measured employing the magnetic spectrometer Big Karl together with dedicated detectors. A (preliminary) result is an anisotropy similar to the one in the time reversed reaction.