Evidence for Broad Resonances in the Three-Nucleon System

Evidence for broad resonances in ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ and the three-proton system has been observed in the continuum neutron spectra from the reactions ${}_{}{}^3{}_{}{}^{}\mathrm{H}(p, n)$ and ${}_{}{}^3{}_{}{}^{}\mathrm{He}(p, n)$ at 30 and 50 MeV. The positions and widths of possible resonances in the three-nucleon system have been calculated using a variational method. A comparison is made with data from photonuclear reactions.