Evidence for a three-nucleon-force effect in proton-deuteron elastic   scattering
  Developments in spin-polarized internal targets for storage rings have permitted measurements of 197 MeV polarized protons scattering from vector polarized deuterons. This work presents measurements of the polarization observables A_y, iT_11, and C_y,y in proton-deuteron elastic scattering. When compared to calculations with and without three-nucleon forces, the measurements indicate that three-nucleon forces make a significant contribution to the observables. This work indicates that three-body forces derived from static nuclear properties appear to be crucial to the description of dynamical properties. 
R. V. Cadman, J. Brack, W. J. Cummings, J. A. Fedchak, B. D. Fox, H.   Gao, W. Gl\"ockle, C. Grosshauser, R. J. Holt, C. E. ...