The particle physics input to the NN charge asymmetric potential due to ρ-ω mixing is updated. The calculated changes in scattering lengths ‖$a_{\mathrm{nn}\mathrm{\Vert }\mathrm{-}\mathrm{\Vert }{a}_{\mathrm{pp}\mathrm{\Vert }\mathrm{\sim }1.3\pm 0.2}}$ fm are in good agreement with experiment (∼1.4±0.8 fm), as are the contributions to the binding energy difference in the A=3 mirror nuclei.

• Received 29 July 1987

DOI:https://doi.org/10.1103/PhysRevC.36.2189