Delta-isobar relativistic meson exchange currents in quasielastic electron scattering

Abstract

We study the role of the $\Delta$-isobar current on the response functions for high energy inclusive quasielastic electron scattering from nuclei. We consider a general Lagrangian which is compatible with contact invariance and perform a fully relativistic calculation in first-order perturbation theory for one-particle emission. The dependence of the responses upon off-shell parametrizations is analyzed and found to be mild. A discussion of scaling behaviour and a comparison with various non-relativistic approaches are also presented.

26 pages, 9 figures; one page of text added; corrected errors in eqs

References in corpus (4)

• Extended Superscaling of Electron Scattering from Nuclei
• Gauge and Lorentz invariant one-pion exchange currents in electron scattering from a relativistic Fermi gas
• Relativistic pionic effects in quasielastic electron scattering
• Momentum distribution of relativistic nuclei with Hartree-Fock mesonic correlations

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