Short-range correlations and meson exchange currents in photonucleon emission
Abstract
One-nucleon emission processes induced by photon absorption are studied by considering short-range correlations effects. At energies above the giant resonance region the validity of the direct knock-out model has been tested by comparison with continuum Random Phase Approximation results. Nucleon re-scattering effects have been considered by using an optical potential. The role of the electromagnetic convection, magnetization and meson exchange currents has been investigated as a function of both excitation energy and momentum transfer. The short-range correlation effects have been studied by using various correlation functions. We found that the nucleon photo-emission cross section is rather sensitive to the presence of short-range correlations at large values of nucleon emission angle. In this region, however, the effects of meson exchange currents are even larger than those produced by short-range correlations.
Cite
@article{arxiv.nucl-th/0201024,
title = {Short-range correlations and meson exchange currents in photonucleon emission},
author = {M. Anguiano and G. Co' and A. M. Lallena and S. R. Mokhtar},
journal= {arXiv preprint arXiv:nucl-th/0201024},
year = {2009}
}
Comments
37 pages, 20 figures in postscript, Text in LaTeX