Nuclear matrix elements of neutral currents in muonic atom decays

The nuclear matrix elements of the parity-violating effects of neutral currents are examined for the three light nuclei 6Li, 7Li and 9Be. These matrix elements will play important roles in the quantitative analysis of neutral currents if the hyperfine effects in parity-violating muonic atom decays are actually observed. The matrix elements are related to magnetic electron scattering data. For 6Li, for which scattering data are available, the calculated matrix elements contain the least uncertainty from nuclear physics. For 7Li and 9Be, for which data are unavailable, reasonably good models, such as the j-j coupling limit and the intermediate coupling model, are employed in computing the matrix elements. (Auth.)