Nucleon–nucleon and Pion–nucleon Potentials from Phase Shifts Using Quantum Inversion

NN and πN partial wave radial potentials have been generated using the latest SM94–VPI(NN) and FA93–VPI(πN) phase shifts. The potentials are used to determine the deuteron properties and to compute the H and He binding energies. The ε1 mixing angles of SM94–VPI and NY93–Nijmegen differ significantly and inversion potentials yield a Pd of 6.37% and 5.78%, respectively. Under–binding of H and He is enhanced by SM94, which signals more nonlocality and/or three–body potential effects than predicted from Nijmegen phase shifts and boson exchange models. The local pion–nucleon S31, P31 and P33 channel potentials have been generated for guidance and to obtain a quantitative impression in r–space of what the πN FA93–VPI phase shifts imply.