Deuteron photo-disintegration with polarised photons in the energy range 30-50 MeV

Abstract The reaction d( γ , np) has been studied using the tagged and polarised LADON gamma ray beam at an energy 30–50 MeV to investigate the existence of narrow dibaryonic resonances recently suggested from the experimental measurements in a different laboratory. The beam was obtained by Compton back-scattering of laser light on the electrons of the storage ring ADONE. Photo-neutron yields were measured at five neutron angle υ n c.m. = 22°, 55.5°, 90°, 125° and 157° in the center of mass system. Our results do not support the existence of such resonances.