Using the hypothesis of pion-pole dominance of the divergence of the weak parity-noncon-serving $\mathrm{NN}\rho$ amplitude we express the axial-vector form factor for the amplitude in terms of the amplitude for the parity-nonconserving transition $\rho \to \pi$. This result enables us to fix one of the unknown parameters in our previous calculation of the $\mathrm{NN}\rho$ amplitude using the $\mathrm{SU}{\mathrm{}\left(6\right)\mathrm{}}_W$ symmetry properties of the Hamiltonian. Reasonable assumptions for the other parameter suggest that the $\mathrm{NN}\rho$ amplitude is about 6 times larger than the factorization value.

• Received 6 January 1972

DOI:https://doi.org/10.1103/PhysRevD.6.2184