Validity of the Impulse Approximation and Quasielastic (e,e'p) Reactions from Nuclei
Jan Ryckebusch
Abstract
We assess the combined effect of ground-state correlations, meson-exchange and isobar currents upon the cross sections for quasielastic (e,e'p) reactions from nuclei. Four-momenta in the range 0.1 ≤ Q2 ≤ 1 GeV2 are addressed. We observe that for Q2 values exceeding 0.2 GeV2, quasielastic conditions and missing momenta below the Fermi momentum, the ground-state correlations and two-body currents do not dramatically alter the (e,e'p) predictions as they are obtained in the impulse approximation. Moreover, deviations from the impulse approximation exhibit a rather modest Q2 dependence.
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