T-20 MEASUREMENTS FOR H-1((D)OVER-RIGHT-ARROW,GAMMA)HE-3 AND THE P-WAVE COMPONENT OF THE NUCLEON-NUCLEON FORCE

Measurements of T-20(theta(lab)=90 degrees) for H-1((d) over right arr ow, gamma)He-3, in the energy range E(d)(lab)=12.7-19.8 MeV, have been compared with the results of new exact three-body Faddeev calculation s using the Paris and Bonn-A nucleon-nucleon (NN) potentials. This com parison indicates a strong sensitivity of the T-20 observable to the p -wave part of the NN force. In particular, we find that the P-3(1) com ponent of the P-wave interaction is the dominant P-wave term affecting the value of T-20(theta(lab)=90 degrees) at these energies. This cont rasts with the results of polarized N-D scattering studies where the P -3(0) component has been found to dominate.