Experimental momentum distributions for the transitions to the ground state and first excited state of 6 He have been measured via the reaction 7 Li͑e, e 0 p͒ 6 He. They are compared to theoretical distributions calculated with variational Monte Carlo (VMC) wave functions which include strong state-dependent correlations in both 7 Li and 6 He. These VMC calculations provide a parameter-free prediction that reproduces the measured data, including its normalization. The deduced spectroscopic factor for the two transitions is 0.58 6 0.05, in perfect agreement with the VMC value of 0.60. This is the first successful comparison of experiment and ab initio theory for spectroscopic factors in p-shell nuclei.

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The interference structure function /oi, the transverse structure function /n, and the longitudinal structure function /oo have been determined in a 2 H(e,e'p) experiment at a four-momentum transfer (? =0.21 (GeV/c) 2 . The/oo and/n data are in agreement both with a nonrelativistic calculation that includes the effects of final-state interaction (FSI), meson-exchange currents, and isobar configurations, and with a relativistic calculation that only includes FSI effects. The/oi data demonstrate the relevance of a relativistic approach even at this low value of the momentum transfer.

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