A Consistent Treatment of Final-State Interactions in NuWro Quasielastic Channel

TL;DR

This paper introduces a unified approach to modeling final-state interactions in quasielastic lepton-nucleus scattering within the NuWro generator, improving agreement with experimental data.

Contribution

It develops a consistent formalism combining inclusive and exclusive FSI treatments in NuWro, enhancing the accuracy of scattering predictions.

Findings

Inclusion of FSI improves agreement with electron-scattering data.

The approach accurately reproduces MicroBooNE CCQE measurements.

Unified FSI treatment benefits both inclusive and exclusive observables.

Abstract

In this proceeding, I present a modified treatment of final-state interactions (FSI) in quasielastic (QE) lepton-nucleus scattering within the spectra function (SF) framework of the NuWro Monte Carlo generator. Our approach establishes a consistent correspondence between inclusive cross-section calculations and exclusive descriptions of hadron-propagation by combining a convolution-based formalism at the cross-section level with an event-level implementation in which interactions are classified as transparent or non-transparent within the NuWro intranuclear cascade. This unified framework enables realization of FSI effects across inclusive observables and exclusive final states. We demonstrate the impact of this implementation by comparing predictions to both inclusive electron-scattering data and exclusive MicroBooNE measurements of CCQE-dominated observable, showing that the inclusion of FSI leads to a significant improvement in agreement with the data.