Effects of meson-exchange currents on the ([ital [rvec e]],[ital e][prime][ital p]) structure functions

Journal Article · Sun May 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.2695· OSTI ID:5009604

Van der Sluys, V; Ryckebusch, J; Waroquier, M ^[1]

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1. Institute for Theoretical Physics and Institute for Nuclear Physics, Proeftuinstraat 86, B-9000 Gent (Belgium)

The response functions for the unpolarized ([ital e],[ital e][prime][ital p]) and polarized ([ital [rvec e]],[ital e][prime][ital p]) reaction are calculated for medium-heavy nuclei under quasifree conditions. The formalism presented here incorporates both electron distortion effects and 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 self-consistent Hartree-Fock random phase approximation formalism. The effect of Coulomb distortion of the incoming and outgoing electron is included within a fully distorted wave calculation. The sensitivity of the results to the two-body currents is discussed for the five structure functions in quasielastic ([ital [rvec e]],[ital e][prime][ital p]) scattering off the target nuclei [sup 16]O and [sup 40]Ca. A selective sensitivity to the two-body currents is obtained in the longitudinal-transverse interference term [ital W][sub [ital L][ital T]] for which two-body currents can explain part of the discrepancy between the impulse-approximation calculations and the data.

• OSTI ID: 5009604
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:5; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663120* -- Nuclear Structure Models & Methods-- (1992-)
663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663420 -- Lepton-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BEAMS
BOSON-EXCHANGE MODELS
BOSONS
CALCIUM 40 TARGET
CALCULATION METHODS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIRECT REACTIONS
DISTORTED WAVE THEORY
ELECTRON REACTIONS
ELEMENTARY PARTICLES
FERMIONS
FINAL-STATE INTERACTIONS
FUNCTIONS
HADRONS
HARTREE-FOCK METHOD
INTERACTIONS
LEPTON REACTIONS
MATHEMATICAL MODELS
MESONS
NUCLEAR REACTIONS
NUCLEONS
OXYGEN 16 TARGET
PARTICLE MODELS
PERIPHERAL MODELS
POLARIZED BEAMS
PROTONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RANDOM PHASE APPROXIMATION
RESPONSE FUNCTIONS
SCATTERING
STRUCTURE FUNCTIONS
TARGETS