Spin-dependent correlations and the semi-exclusive 16O(e,e′p) reaction

✍ Scribed by Stijn Janssen; Jan Ryckebusch; Wim Van Nespen; Dimitri Debruyne

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 782 KB
• Volume: 672
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00058-0

✦ Synopsis

The effect of central, tensor and spin-isospin nucleon-nucleon correlations upon semi-exclusive 16 O(e, e p) reactions is studied for Q 2 and Bjorken x values in the range 0.2 Q 2 1.1 (GeV/c) 2 and 0.15 x 2. The fully unfactorized calculations are performed in a framework that accounts not only for the dynamical coupling of virtual photons to correlated nucleon pairs but also for mesonexchange and ∆ 33 -isobar currents. Tensor correlations are observed to produce substantially larger amounts of semi-exclusive 16 O(e, e p) strength than central correlations do and are predominantly manifest in the proton-neutron knockout channel. With the exception of the x ≈ 2 case, in all kinematical situations studied the meson-exchange and isobar currents are a strong source of A(e, e p) strength at deep missing energies. This feature gives the A(e, e p) strength at deep missing energies a pronounced transverse character.