Correlations and the cross section of exclusive (e, e′p) reactions for 16O

✍ Scribed by K. Amir-Azimi-Nili; J.M. Udias; H. Müther; L.D. Skouras; A. Polls

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 950 KB
• Volume: 625
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(97)00595-2

✦ Synopsis

The reduced cross section for exclusive (e, ePp) reactions has been studied in DWlA for the example of the nucleus 160 using a spectral function containing effects of correlations. The spectral function is evaluated directly for the finite nucleus starting from a realistic nucleonnucleon interaction within the framework of the Green's function approach. The emphasis is focused on the correlations induced by excitation modes at low energies described within a model-space of shell-model configurations including states up to the sdg shell. Cross sections for the p-wave quasi-hole transitions at low missing energies are presented and compared with the most recent experimental data. In the case of the so-called perpendicular kinematics the reduced cross section derived in DWIA shows an enhancement at high missing momenta as compared to the PWlA result. Furthermore the cross sections for the s-and d-wave quasi-hole transitions are presented and compared to available data at low missing momenta. Also in these cases, which cannot be described in a model without correlations, a good agreement with the experiment is obtained. (~) 1997 Published by Elsevier Science B.V.