Three-body effects in p^→d elastic scattering at 250 MEV

The angular distributions of the cross section, the proton analyzing power and all of proton polarization transfer coefficients of p^→d elastic scattering were measured at 250 MeV. The present data are compared with theoretical predictions based on exact solutions of the three-nucleon Faddeev equations and modern realistic nucleon-nucleon potentials combined with three-nucleon forces. These results call for a better understanding of the spin structure of the three-nucleon force and very likely for a full relativistic treatment of the three-nucleon continuum.