Spin observables in the three-body break-up process near the quasi-free limit in deuteron-deuteron scattering

摘要

We have studied spin observables in the three-body break-up reaction in deuteron-deuteron scattering in the phase-space regime that corresponds to the quasi-free deuteron-proton scattering process with the neutron as spectator. The data are compared to measurements of the elastic deuteron-proton scattering process and state-of-the-art Faddeev calculations. The results for iT_(11) and T_(22) for the quasi-free scattering data agree very well with previously published elastic-scattering data. A significant discrepancy is found for T_(20), which could point to a break-down of the quasi-free assumption.