Validity of the Impulse Approximation and Quasielastic (e,e'p) Reactions from Nuclei

2000/12/20 by J. Ryckebusch, Ryckebusch, Jan
Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Quantum chaos and dynamical systems

paper · pdf · doi:10.48550/arxiv.nucl-th/0012071

openalex publication_date 2000/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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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