Meson-exchange currents and final-state interactions in quasielastic electron scattering at high momentum transfers
Name
Amaro-2010-Meson-exchange currents and final-state interactions in quasielastic electron scattering at high momentum transfers.pdf
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Author(s)
Amaro, J. E.
Barbaro, M. B.
Caballero, J. A.
Maieron, C.
Udias, J. M.
Donnelly, T. William
Date Issued
January 2010
Journal
Physical Review C
Publisher
American Physical Society
Citation
Amaro, J. E. et al. “Meson-exchange currents and final-state interactions in quasielastic electron scattering at high momentum transfers.” Physical Review C 81.1 (2010): 014606. © 2010 The American Physical Society
Version
Final published version
Abstract
The effects of meson-exchange currents (MEC) are computed for the one-particle one-hole transverse response function for finite nuclei at high momentum transfers q in the region of the quasi-elastic peak. A semirelativistic shell model is used for the one-particle-emission (e,e') reaction. Relativistic effects are included using relativistic kinematics, performing a semirelativistic expansion of the current operators, and using the Dirac-equation-based (DEB) form of the relativistic mean-field potential for the final states. It is found that final-state interactions (FSI) produce an important enhancement of the MEC in the high-energy tail of the response function for q≥1 GeV/c. The combined effect of MEC and FSI goes away when other models of the FSI, not based on the DEB potential, are employed.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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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.81.014606
