Geant4Reweight: a framework for evaluating and propagating hadronic interaction uncertainties in GEANT4

Abstract

Geant4Reweight is an open-source C++ framework that allows users to 1) weight tracks produced by the GEANT4 particle transport Monte Carlo simulation according to hadron interaction cross section variations and 2) estimate uncertainties in GEANT4 interaction models by comparing the simulation's hadron interaction cross section predictions to data. The ability to weight hadron transport as simulated by GEANT4 is crucial to the propagation of systematic uncertainties related to secondary hadronic interactions in current and upcoming neutrino oscillation experiments, including MicroBooNE, NOvA, and DUNE, as well as hadron test beam experiments such as ProtoDUNE. We provide motivation for weighting hadron tracks in GEANT4 in the context of systematic uncertainty propagation, a description of GEANT4's transport simulation technique, and a description of our weighting technique and fitting framework in the momentum range 0--10 GeV/c, which is typical for the hadrons produced by neutrino interactions in these experiments.

arXiv commentAdded github link and fixed some typos

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• The T2K Experiment
• Design and Construction of the MicroBooNE Detector
• The T2K Neutrino Flux Prediction
• Evidence of Electron Neutrino Appearance in a Muon Neutrino Beam
• Neutrino Flux Predictions for the NuMI Beam
• First measurement of muon-neutrino disappearance in NOvA
• First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
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Cited by in corpus (18)

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• Multi-Differential Cross Section Measurements of Muon-Neutrino-Argon Quasielastic-like Reactions with the MicroBooNE Detector
• Search for long-lived heavy neutral leptons and Higgs portal scalars decaying in the MicroBooNE detector
• First double-differential measurement of kinematic imbalance in neutrino interactions with the MicroBooNE detector
• Inclusive cross section measurements in final states with and without protons for charged-current ${\nu }_{\mu }$-Ar scattering in MicroBooNE
• First simultaneous measurement of differential muon-neutrino charged-current cross sections on argon for final states with and without protons using MicroBooNE data
• Search for a Hidden Sector Scalar from Kaon Decay in the Di-Muon Final State at ICARUS
• First Measurement of the Total Inelastic Cross-Section of Positively-Charged Kaons on Argon at Energies Between 5.0 and 7.5 GeV
• First measurement of ${\nu }_e$ + ${\bar{\nu }}_e$ charged current single charged pion production differential cross sections on argon using the MicroBooNE detector
• Precision measurement of neutrino oscillation parameters with 10 years of data from the NOvA experiment
• First study of neutrino angle reconstruction using quasielastic-like interactions in MicroBooNE
• Measurement of charged-current muon neutrino-argon interactions without pions in the final state using the MicroBooNE detector
• Search for the production of Higgs-portal scalar bosons in the NuMI beam using the MicroBooNE detector
• Measurement of single charged pion production in charged-current ${\nu }_{\mu }$-Ar interactions with the MicroBooNE detector
• First Measurement of Differential Cross Sections for Muon Neutrino Charged Current Interactions on Argon with a Two-proton Final State in the MicroBooNE Detector
• Measurement of the differential cross section for neutral pion production in charged-current muon neutrino interactions on argon with the MicroBooNE detector