Possible Dibaryon Resonance around 2.23GeV/c2ind(γ,p)X

The measured $d(\gamma ,p)X$ cross section shows a rapid variation around a photon energy $k=390\mathrm{}$ MeV, not explained up to now by pion or nucleon rescattering processes. It is suggested that this and other related results could be explained by the existence of a dibaryonic resonance at a mass of 2.23 ${\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c}}^2$.