Photon-induced two-nucleon knockout reactions to discrete final states

Abstract

Cross sections and photon asymmetries of the exclusive 16O(γ,pn)14N and 16O(γ,pp)14C knockout reactions are calculated for transitions to the low-lying discrete final states of the residual nucleus in the photon-energy range between 100 and 400 MeV. Exclusive reactions may represent a test of reaction mechanisms and a promising tool for investigating the dynamics of nucleon pairs in different states. Cross sections and asymmetries for both (γ,pn) and (γ,pp) turn out to be only slightly affected by short-range correlations and dominated by two-body currents. Therefore, two-nucleon knockout reactions induced by real photons appear well suited to investigate the nuclear current and the selectivity of individual transitions to its different components.

21 pages, 16 postscript figures

References in corpus (3)

• Selectivity of the 16O(e,e'pp) reaction to discrete final states
• Treatment of the $\Delta$ current in electromagnetic two-nucleon knockout reactions
• Polarization degrees of freedom in photoinduced two-nucleon knockout from finite nuclei

Cited by in corpus (11)

• Short-range and tensor correlations in the ${}^{16}$O(e,e${}^{\prime }$pn) reaction
• Effects of nuclear correlations on the ${}^{16}$O$(e,e^{\prime }pN)$ reactions to discrete final states
• Knockout of proton-neutron pairs from ${}^{16}$O with electromagnetic probes
• NN final-state interaction in two-nucleon knockout from ${}^{16}O$
• Photo-emission of two protons from nuclei
• On the treatment of the $\Delta$-contribution in electromagnetic $pp$-knockout reactions
• Electromagnetic proton-neutron knockout off 16O: new achievements in theory
• Two-proton overlap functions in the Jastrow correlation method and cross section of the ${}^{16}$O$(e,e^{\prime }pp{)}^{14}$C${}_{g.s.}$ reaction
• Center-of-mass effects in electromagnetic two-proton knockout reactions
• Proton recoil polarization in exclusive (e,e'pp) reactions
• Neutron skins probed in proton knockout from neutron-rich nuclei