Parity violation in quasielastic electron scattering from closed-shell nuclei

Amaro, J. E.; Caballero, J. A.; Donnelly, T. W.; Lallena, A. M.; de Guerra, E. Moya; Udias, J. M.

Parity violation in quasielastic electron scattering from closed-shell nuclei

Authors

Description

The electromagnetic and weak neutral current matrix elements that enter in the analysis of parity-violating quasielastic electron scattering are calculated using a continuum nuclear shell model. New approximations to the on-shell relativistic one-body currents and relativistic kinematics for use in such models are developed and discussed in detail. Results are presented for three closed-shell nuclei of interest: $^{16}$O, $^{40}$Ca and $^{208}$Pb. The current work concludes with a study of the sensitivity of the resulting parity-violating asymmetries to properties of the nucleon form factors including the possible strangeness content of the nucleon.
41 pages in LaTeX, with 15 PostScript figures