Angular Distributions for 3,4 Lambda H Bound States in the 3,4 He(e,eK+) reaction

The 3Lambda H and 4Lambda H hypernuclear bound states have been observed for the first time in kaon electroproduction on 3,4He targets. The production cross sections have been determined at Q**2= 0.35 GeV**2 and W= 1.91 GeV. For either hypernucleus the nuclear form factor is determined by comparing the angular distribution of the 3,4He(e,eK+)3,4Lambda H processes to the elementary cross section 1H(e,eK+) Lambda on the free proton, measured during the same experiment.