Few-body physics with polarized beams and targets at IUCF

An experiment utilizing a polarized ³He target and other 3-nucleon experiments at the Indiana University Cyclotron Facility are discussed. The ³overlineHe( overlinep, pN) reaction has been used to investigate the spin dependent momentum distributions of protons and neutrons in ³He. It was found that with large momentum transfer the PWIA is valid, thus allowing extraction of the distributions directly from the data. A similar experiment is currently under preparation to investigate the spin structure of the deuteron via the ²overlineH( overlinep, pN) reaction. Other experiments will study n-d and p-d breakup spin observables in final state interaction kinematics where intermediate energy Faddeev calculations predict large 3-body force effects.