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

Abstract

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 $(e,e^{\prime })$ and $({\nu }_{\mu },{\mu }^{-})$ cross sections for intermediate momentum transfers are investigated.

arXiv comment36 pages, 17 figures

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