Ndelastic scattering as a tool to probe properties of3Nforces

Faddeev equations for elastic $\mathrm{Nd}$ scattering have been solved using modern $\mathrm{NN}$ forces combined with the Tucson-Melbourne two-pion exchange three-nucleon force, with a modification thereof closer to chiral symmetry and the Urbana IX three-nucleon force. Theoretical predictions for the differential cross section and several spin observables using $\mathrm{NN}$ forces only and $\mathrm{NN}$ forces combined with three-nucleon force models are compared to each other and to the existing data. A wide range of energies from 3 to 200 MeV is covered. Especially at the higher energies striking three-nucleon force effects are found, some of which are supported by the still rare set of data, some of which are in conflict with data and thus very likely point to defects in those three-nucleon force models.