Resonance-like behaviour of the pionic double charge exchange at low energies

Abstract All presently available data on pionic double charge exchange on nuclei exhibit a resonance-like energy dependence near T π = 50 MeV, while the angular distributions behave quite regularly. We show that these features find their natural explanation by a narrow resonance in the πNN-subsystym with J p = 0 − and a mass of 2.065 GeV.