Lepton-induced reactions on nuclei in a wide kinematical regime

TL;DR

This paper presents an improved theoretical analysis of lepton-induced nuclear reactions across a wide range of energies using the GiBUU framework, incorporating a new parametrized electron-nucleon interaction model.

Contribution

The study introduces a novel parametrized electron-nucleon interaction model within GiBUU, enhancing the description of electron and neutrino reactions on nuclei across diverse kinematic regimes.

Findings

Accurate reproduction of experimental cross sections across multiple experiments.

Effective transformation of electron structure functions to neutrino structure functions.

Consistent analysis across different energy regimes using a unified theoretical approach.

Abstract

Inclusive differential cross sections for various $e A$ and $\nu A$ reactions are analyzed within the GiBUU theoretical framework and code. The treatment of electron-nuclus reactions has been significantly improved by implementing a parametrized description of electron-nucleon interactions for a nucleon. Using the momentum of a nucleon inside the Fermi sea the electron-nucleon cross sections are then Lorentz-boosted to obtain the electron structure functions for nuclei. The neutrino structure functions are obtained from the ones for electrons by a transformation that involves the axial formfactors and kinematical factors that account for the difference of vector and axial currents. Special emphasis is put on analyzing data from various different experiments in different neutrino energy regimes with one and the same theoretical input.