Abstract
The nucleon-nucleon parity-nonconserving potentials given by Desplangues, Donoghue, and Holstein (DDH) are used to calculate matrix elements between states of opposite parity in $^{10}\mathrm{B}$, $^{16}\mathrm{O}$, $^{18}\mathrm{F}$, $^{19}\mathrm{F}$, $^{20}\mathrm{Ne}$, and $^{21}\mathrm{Ne}$. The sensitivity of the parity-nonconserving matrix elements to various approximations in the microscopic shell-model wave functions is investigated. The final results using the DDH estimates for the weak mesonnucleon coupling constants based on the Weinberg-Salam theory are several times larger than experiment.
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