Parity-nonconserving spin rotation in weak neutron-deuteron scattering
Parity nonconservation in weak nd scattering is studied at threshold where neutron spin rotation might occur. The standard (Faddeev) three-body theory with an s-wave separable potential is employed together with modifications introduced to account for the weak NN interaction, for which I take the one-pion-exchange isovector term. I find dphi/dz = 6.13 x 10/sup -9/ rad/cm and estimate the errors resulting from the adoption of the pertinent approximations.