Two-nucleon knockout contributions to the 12C(e,e'p) reaction in the dip and Δ(1232) regions
J. Ryckebusch, V. Van der Sluys, M. Waroquier, L. J. H. M. Kester, W. H. A. Hesselink, E. Jans, A. Zondervan
Abstract
The contributions from 12C(e,e'pn) and 12C(e,e'pp) to the semi-exclusive 12C(e,e'p) cross section have been calculated in an unfactorized model for two-nucleon emission. We assume direct two-nucleon knockout after virtual photon coupling with the two-body pion-exchange currents in the target nucleus. Results are presented at several kinematical conditions in the dip and Δ(1232) regions. The calculated two-nucleon knockout strength is observed to account for a large fraction of the measured (e,e'p) strength above the two-nucleon emission threshold.
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