Positive pion absorption on 3He using modern trinucleon wave functions
  We study pion absorption on 3He employing trinucleon wave functions calculated from modern realistic NN interactions (Paris, CD Bonn). Even though the use of the new wave functions leads to a significant improvement over older calculations with regard to both cross section and polarization data, there are hints that polarization data with quasifree kinematics cannot be described by just two-nucleon absorption mechanisms. 
S. Schneider, J. Haidenbauer, C. Hanhart, J. A. Niskanen