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Consistent one-pion exchange currents in electron scattering from a relativistic Fermi gas

J. E. Amaro·M. B. Barbaro·J. A. Caballero·T. W. Donnelly·A. Molinari
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Abstract

A set of fully relativistic one-pion-exchange electromagnetic operators is developed for use in one-particle emission reactions induced by electrons. To preserve the gauge invariance of the theory additional pionic correlation operators are required beyond the usual meson-exchange current operators. Of these, in the present work emphasis is placed on the self-energy current which is infinite and needs to be renormalized. The renormalized current is expanded to first order to obtain a genuine one-pion-exchange contribution to the inclusive responses.

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J. E. Amaro, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, A. Molinari. 2001-07-26. Consistent one-pion exchange currents in electron scattering from a relativistic Fermi gas. https://arxiv.org/abs/nucl-th/0107069

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