Precise measurement of dp elastic scattering at 270 MeV and three-nucleon force effects

The cross section, the deuteron vector A(y)(d) and tensor analyzing powers A(ij), the polarization transfer coefficients K-ij(y'), and the induced polarization P-y' were measured for the dp elastic scattering at 270 MeV. The cross section and A(y)(d) are well reproduced by Faddeev calculations with modern data-equivalent nucleon-nucleon forces plus the Tucson-Melbourne three-nucleon force. In contrast, A(ij), K-ij(y'), or P-y' are not described by such calculations. These facts indicate the deficiencies in the spin dependence of the Tucson-Melbourne force and call for extended three-nucleon force models.