Effects of nuclear correlations on the $^{16}$O$(e,e'pN)$ reactions to discrete final states

Details Effects of nuclear correlations on the $^{16}$O$(e,e'pN)$ reactions to discrete final states Effects of nuclear correlations on the $^{16}$O$(e,e'pN)$ reactions to discrete final states

2004-02-24

arxiv.org/abs/nucl-th/0402081v1

Phys.Rev. C70 (2004) 014606

Physics

Nuclear Physics

Nuclear Theory

13 pages, 9 figures

Scientific paper

10.1103/PhysRevC.70.014606

Calculations of the $^{16}$O$(e,e'pN)$ cross sections to the ground state and first excited levels of the $^{14}$C and $^{14}$N nuclei are presented. The effects of nuclear fragmentation have been obtained in a self-consistent approach and are accounted for in the determination of the two-nucleon removal amplitudes. The Hilbert space is partitioned in order to compute the contribution of both long- and short-range effects in a separate way. Both the two-proton and the proton-neutron emission cross sections have been computed within the same models for the reaction mechanism and the contribution from nuclear structure, with the aim of better comparing the differences between the two physical processes. The $^{16}$O$(e,e'pp)$ reaction is found to be sensitive to short-range correlations, in agreement with previous results. The $^{16}$O$(e,e'pn)$ cross section to $1^+$ final states is dominated by the $\Delta$ current and tensor correlations. For both reactions, the interplay between collective (long-range) effects and short-range and tensor correlations plays an important role. This suggests that the selectivity of $(e,e'pN)$ reactions to the final state can be used to probe correlations also beyond short-range effects.

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