Empirical Fit to electron-nucleus scattering

TL;DR

This paper presents an empirical model for electron-nucleus scattering across various nuclei, based on extensive data, capturing key features like Fermi motion and resonance effects, useful for analyzing scattering experiments within specified energy ranges.

Contribution

It introduces a new empirical fit for electron-nucleus scattering data for nuclei with A>2, incorporating Fermi motion and resonance effects, extending previous proton and neutron fits.

Findings

The fit covers $0<W<3.2$ GeV and $0.2<Q^2<5$ GeV$^2$ ranges.

It accounts for the dip between quasi-elastic peak and $ ext{Delta}(1232)$ resonance.

The model can be cautiously applied at lower $Q^2$ values.

Abstract

An empirical fit to electron-nucleus scattering for $A>2$ is made based on world data. It is valid for $0<W<3.2$ GeV and $0.2<Q^2<5$ GeV$^2$, and can be used with caution at lower $Q^2$. The fit is based on previous empirical fits to electron-proton and electron-neutron scattering, taking into account the effects of Fermi motion plus a substantial extra contribution that fills in the dip between the quasi-elastic peak and the $\Delta(1232)$ resonance.