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

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

1993-07-13

arxiv.org/abs/nucl-th/9307012v1

Phys.Rev.C49:2695-2703,1994

Physics

Nuclear Physics

Nuclear Theory

12 pages in LaTex with 5 figures (available on request), INW0703

Scientific paper

10.1103/PhysRevC.49.2695

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 $\Delta (1232)$ 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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