Meson-exchange currents and final-state interactions in quasielastic electron scattering at high momentum transfers

J. E. Amaro, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, C. Maieron, and J. M. Udias
Phys. Rev. C 81, 014606 – Published 13 January 2010

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 q1 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.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 30 June 2009

DOI:https://doi.org/10.1103/PhysRevC.81.014606

©2010 American Physical Society

Authors & Affiliations

J. E. Amaro1, M. B. Barbaro2, J. A. Caballero3, T. W. Donnelly4, C. Maieron1, and J. M. Udias5

  • 1Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Granada, Granada E-18071, Spain
  • 2Dipartimento di Fisica Teorica, Università di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino, Italy
  • 3Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, Apdo.1065, E-41080 Sevilla, Spain
  • 4Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
  • 5Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, E-28040, Madrid, Spain

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 81, Iss. 1 — January 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×