Exploring fundamental properties of ³He through the polarized ³He(e,e'd) process in CLAS12

Spectrometer measurements of the (e,e’p) and (e,e’d) quasi-elastic processes on polarized 3He have revealed deficiencies in our understanding of the three-body system.  With the limited kinematic coverage of these experiments, it has been impossible to disentangle which aspects of the theoretical description are problematic. While resolving these problems is interesting from a purely few-body physics point of view, it is also of critical importance to our interpretation of deep-inelastic data from polarized ³He which is often used as an effective polarized neutron target.   A new idea to measure these reactions in CLAS12 with a new meta-stability exchange optical pumped ³He target.    This new data, which will cover an extremely board range of kinematics,  should allow determination of which model ingredients such as the choice of the NN force, relevance of the three-nucleon force, final-state interactions, and/or meson-exchange currents need to be improved.