Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-06-30
Phys.Rev.C81:014606,2010
Physics
Nuclear Physics
Nuclear Theory
4 pages, 5 figures
Scientific paper
10.1103/PhysRevC.81.014606
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 quasielastic peak. A semi-relativistic shell model is used for the one-particle-emission $(e,e')$ reaction. Relativistic effects are included using relativistic kinematics, performing a semi-relativistic 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 $q\geq 1$ 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.
Amaro J. E.
Barbaro Maria B.
Caballero Jose Antonio
Donnelly T. W.
Maieron Chiara
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