On the electromagnetic production of the proposed πNN resonance d'

We examine the electromagnetic decay rates as well as the photo- and electroproduction cross sections of the proposed πNN resonance d', for the existence of which evidence has been claimed in the pionic double charge exchange (DCX) on nuclei as well as in the 2π-production in pp-collisions. Based on the d' parameters deduced from DCX, we estimate the d'-production on the deuteron in the reactions γd→NNπ and ed→e'NNπ. Comparing to the non-resonant cross sections at the relevant energies and momentum transfers, we discuss the feasibility of a search for a d' signal both in γd →npπ0 and in ed→e'NNπ. (orig.)