Abstract
Elastic scattering of antiprotons on even-even nuclei is calculated microscopically from the Dover-Richard and Paris potentials. The five different spin-dependent t-matrix elements are each parametrized in terms of simple functions. The fairly weak energy dependence is included by using an effective value of the relative energy obtained by averaging over the distribution in the nuclear tail. The first order optical potential reproduces reasonably well the differential cross section. The second order correction to the optical potential is then obtained in a perturbative treatment. Selfconsistency is only approximately satisfied, but we argue that the tremendous simplifications this entails are still sufficiently accurate for our purpose. Both the central and the spin-orbit optical potential, the differential cross section, the polarization and spin rotation functions are calculated. The spin dependence is significantly altered by the second order contribution. Simple analytical expressions are derived for medium effects and for the effect of various types of correlations. All experimentally available cases are investigated and very good agreement is found. We compare with previous work on this subject and discuss earlier conclusions in connection with our results.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
