Delta-isobar relativistic meson exchange currents in quasielastic electron scattering

Details Delta-isobar relativistic meson exchange currents in quasielastic electron scattering Delta-isobar relativistic meson exchange currents in quasielastic electron scattering

2003-01-08

arxiv.org/abs/nucl-th/0301023v2

Nucl.Phys.A723:181-204,2003

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

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.

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