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 in the region of the quasi-elastic peak. A semirelativistic shell model is used for the one-particle-emission 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 GeV/. The combined effect of MEC and FSI goes away when other models of the FSI, not based on the DEB potential, are employed.
- Received 30 June 2009
DOI:https://doi.org/10.1103/PhysRevC.81.014606
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