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Pionic correlations and meson-exchange currents in two-particle emission induced by electron scattering

 

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Opened Access Pionic correlations and meson-exchange currents in two-particle emission induced by electron scattering
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Author: Amaro Soriano, José Enrique
Maieron, C.
Barbaro, M. B.
Caballero Carretero, Juan Antonio
Donnelly, T. W.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2010
Published in: Physical Review C - Nuclear Physics, 82 (4), 044601-1-044601-13.
Document type: Article
Abstract: Two-particle two-hole contributions to electromagnetic response functions are computed in a fully relativistic Fermi gas model. All one-pion exchange diagrams that contribute to the scattering amplitude in perturbation theory are considered, including terms for pionic correlations and meson-exchange currents (MECs). The pionic correlation terms diverge in an infinite system and thus are regularized by modification of the nucleon propagator in the medium to take into account the finite size of the nucleus. The pionic correlation contributions are found to be of the same order of magnitude as the MECs.
Cite: Amaro Soriano, J.E., Maieron, C., Barbaro, M.B., Caballero Carretero, J.A. y Donnelly, T.W. (2010). Pionic correlations and meson-exchange currents in two-particle emission induced by electron scattering. Physical Review C - Nuclear Physics, 82 (4), 044601-1-044601-13.
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URI: http://hdl.handle.net/11441/57870

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