An approximate Coulomb correction that includes Coulomb distortion of the strong amplitudes is used to relate observables for the charge-symmetric branches of $N-N$ and $N-d$ scattering. The approximate correction is nearly identical with an exact calculation for $N-N$ scattering, and tends to account better for the differences between $p-d$ measurements and three-body $n-d$ calculations than Coulomb corrections currently used.

NUCLEAR REACTIONS Coulomb correction for mirror reactions; applied to $N-N$ and $N-d$ scattering; predicted polarizations for $n-d$ scattering from $p-d$ phase shifts.

• Received 7 May 1981

DOI:https://doi.org/10.1103/PhysRevC.24.1384