The strong interaction effects of isospin- and spin-dependent nucleon-nucleon correlations observed in many-body calculations are interpreted in terms of a one-pion exchange mechanism. Including such effects in computations of nuclear parity violating effects leads to enhancements of about 10%. A larger effect arises from the one-boson exchange nature of the parity nonconserving nucleon-nucleon interaction, which depends on both weak and strong meson-nucleon coupling constants. Using values of the latter that are constrained by nucleon-nucleon phase shifts leads to enhancements of parity violation by factors close to 2, so that much of previously noticed discrepancies between weak-coupling constants extracted from different experiments can be removed and there is no need to use a very large value of $f_{\pi }$ to explain the ${}^{133}\mathrm{Cs}$ experimental results.

• Received 10 January 2003

DOI:https://doi.org/10.1103/PhysRevC.67.042501