A STATUS-REPORT ON THE SEARCH FOR THE PI-NN RESONANCE D'

In this talk I review the status of the search for a NN-decoupled narr ow resonance in the pi NN-system, the so called d' resonance. After di scussing possible reactions suitable for detecting this resonance, I w ill report on latest results from measurements of the pionic double ch arge exchange reaction on nuclei, where recently it has been shown tha t these data can be well described under the assumption of a significa nt d' contribution in this reaction channel. In order to investigate t he possibility of d' production outside the nuclear medium - and thus to prove or disprove the existence of d' - further reactions have been studied, on which I will report here.