Final-state interactions and superscaling in the semi-relativistic approach to quasielastic electron and neutrino scattering

Amaro, J. E.; Barbaro, M. B.; Caballero, J. A.; Donnelly, T. W.; Udias, J. M.

Final-state interactions and superscaling in the semi-relativistic approach to quasielastic electron and neutrino scattering

Authors

Description

The semi-relativistic approach to electron and neutrino quasielastic scattering from nuclei is extended to include final-state interactions. Starting with the usual non-relativistic continuum shell model, the problem is relativized by using the semi-relativistic expansion of the current in powers of the initial nucleon momentum and relativistic kinematics. Two different approaches are considered for the final-state interactions: the Smith-Wambach 2p-2h damping model and the Dirac-equation-based potential extracted from a relativistic mean-field plus the Darwin factor. Using the latter the scaling properties of $(e,e')$ and $(ν_μ,μ^-)$ cross sections for intermediate momentum transfers are investigated.
36 pages, 17 figures