Pionic correlations and meson-exchange currents in two-particle emission induced by electron scattering
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Amaro-2010-Pionic correlations.pdf
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Author(s)
Amaro, Jose Enrique
Maieron, C.
Caballero, J. A.
Donnelly, T William
Date Issued
October 2010
Journal
Physical Review C
Publisher
American Physical Society
Citation
Amaro, J. et al. “Pionic correlations and meson-exchange currents in two-particle emission induced by electron scattering.” Physical Review C 82.4 (2010): n. pag. © 2010 The American Physical Society
Version
Final published version
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.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.82.044601
