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Effects of meson-exchange currents on the $(\protect\vec{e},e'p)$ structure functions

V. Van der Sluys·J. Ryckebusch·M. Waroquier
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Abstract

The response functions for the unpolarized $(e,e'p)$ and polarized $(\vec{e},e'p)$ reaction are calculated for medium-heavy nuclei under quasifree conditions. The formalism presented here incorporates two-body currents related to meson-exchange and the $Δ(1232)$ excitation. The final-state interaction of the outgoing nucleon with the residual nucleus is handled in a HF-RPA formalism. The sensitivity of the results to the two-body currents is discussed for the five structure functions in quasielastic $(\vec{e},e'p)$ scattering off the target nuclei $^{16}O$ and $^{40}Ca$. A selective sensitivity to the two-body currents is obtained in the longitudinal-transverse interference term $W_{LT}$ where two-body currents can explain part of the discrepancy between the impulse-approximation calculations and the data.

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V. Van der Sluys, J. Ryckebusch, M. Waroquier. 1993-07-13. Effects of meson-exchange currents on the $(\protect\vec{e},e'p)$ structure functions. https://doi.org/10.1103/physrevc.49.2695

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