PROPOSED NEW EXPERIMENTAL CASE TO INVESTIGATE THE WEAK PARITY NONCONSERVING COUPLINGS IN F-20

A new experiment to investigate the isospin sensitivity of the parity nonconserving (PNC) interaction in light nuclei is proposed. The obser vable is the PNC asymmetry for the emitted gamma rays from the 1-1 sta te in F-20 (E(x) = 0.983 MeV) partially polarized in the reaction Ne-2 2(d over arrow pointing right, alpha3)F-20, which is predicted in the range (2.4-5.8) X 10(-5). The structure parts of the components of the PNC matrix elements have been carefully calculated for the analysis o f the experimental result in terms of the weak coupling constants. A n ew class of diagrams contributing to the PNC matrix elements has been included for the first time.