Theory of parity nonconservation in compound-nuclear states

We show how to calculate the root-mean-square parity-violating matrix element M for a heavy nucleons of valence nucleon number ${\mathit{A}}_{\mathit{v}}$ in terms of a standard parity-violating interaction ${\mathit{V}}^{\mathrm{PV}}$. For large values of ${\mathit{A}}_{\mathit{v}}$, we find a scaling law for M in terms of ${\mathit{A}}_{\mathit{v}}$ and the number of core nucleus. We compare our results to a recent measurement of M in ${}_{}{}^{239}{}_{}{}^{}\mathrm{U}$, obtaining results that bracket the data for three previously determined parameter sets of ${\mathit{V}}^{\mathrm{PV}}$.