Effects of meson exchange currents on the (polarized e, e-prime p) structure functions

Van der sluys, V.; Ryckebusch, J.; Waroquier, M.

doi:10.1103/PhysRevC.49.2695

Effects of meson exchange currents on the (polarized e, e-prime p) structure functions

Aug 20, 1993

17 pages

Published in:

Phys.Rev.C 49 (1994) 2695-2703

e-Print:

nucl-th/9307012 [nucl-th]

DOI:

10.1103/PhysRevC.49.2695

Report number:

INWO-703

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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

\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.

25.30.Fj
24.10.Eq
21.60.Jz
electron nucleus: nuclear reaction
electron nucleus: inelastic scattering
inelastic scattering: electron nucleus
electron: polarized beam
polarized beam: electron
oxygen
calcium

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Figures(0)

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