TRINUCLEON CLUSTER KNOCKOUT FROM LI-6

The momentum-transfer dependence of the H-3 and He-3 knockout reaction s from Li-6 via exclusive electron scattering has been measured, and t he two reactions are compared. Tn the absence of two-step processes, t he ratio of the fivefold cross sections for these mirror reactions sho uld simply scale by the ratio of the H-3 and He-3 electron-scattering cross sections. A significant deviation from this simple expectation i s seen at low momentum transfer. Possible explanations for this dramat ic difference in cross sections for these mirror reactions are discuss ed. [S0556-2813(98)02204-3].