Implications of forward photodisintegration for the deuteronDstate and theN−Ninteraction

It is shown that the data on forward photodisintegration is consistent with the value of 0.0203±0.0006 ${\mathrm{fm}}^{-\mathrm{½}}$ for the asymptotic $D$ state amplitude and a value of the pion-nucleon coupling constant of 0.075±0.004, where the latter is in good agreement with other determinations. This value of $A_d$ is consistent with a value suggested by nucleon-nucleon scattering data but apparently inconsistent with the traditional value derived from fitting the measured quadrupole moment.