Theoretical Issues in Two-nucleon Knockout Reactions

Jan Ryckebusch

Department of Subatomic- and Radiation Physics
Ghent University
(jan.ryckebusch@rug.ac.be, http://inwpent5.rug.ac.be/)

The study of electromagnetic nucleon production experiments of the type A$(e,e'p)$ and A$(e,e'pN)$ is an active field. One of its major goals is the study of the limitations of the mean-field picture for nuclei. Two-nucleon knockout experiments offer the opportunity to study central and tensor correlations in nuclei. The extraction of physical information from the data is not a straightforward exercise and involves theoretical modeling. Results of $A(e,e'pp)$, $A(e,e'pn)$ and semi-exclusive $A(e,e'p)$ calculations will be presented. The role of two-nucleon photoabsorption mechanisms for the extraction of spectroscopic factors from exclusive A$(e,e'p)$ processes will be discussed.

Bibliography

• S. Boffi, C. Giusti, F.D. Pacati and M. Radici, ``Electromagnetic Response of Atomic Nuclei'' (Oxford University Press, Oxford, 1996)
• J. Ryckebusch, S. Janssen, W. Van Nespen and D. Debruyne, Phys. Rev. C 61 (2000), 021603(R).
• Stijn Janssen, Jan Ryckebusch, Wim Van Nespen and Dimitri Debruyne, Nucl. Phys. A672 (2000), 285.