Abstract
A simple relationship between the one-body and exchange-current contributions to the axial charge operator may allow a separation of these amplitudes in the -decay transition . Since the exchange-current operator is related by isospin rotation to the pion-exchange component of the parity-nonconserving nucleon-nucleon potential, this suggests that the parity-nonconserving pion coupling can be extracted, with minimal dependence on nuclear models, from circular-polarization measurements for the analog decay in .
- Received 1 December 1980
DOI:https://doi.org/10.1103/PhysRevLett.46.698
©1981 American Physical Society