Simulation of Deflection Uncertainties on Directional Reconstructions of Muons Using PROPOSAL

Abstract

Large scale neutrino detectors and muon tomography rely on the muon direction in the detector to infer the muon's or parent neutrino's origin. However, muons accumulate deflections along their propagation path prior to entering the detector, which may need to be accounted for as an additional source of uncertainty. In this paper, the deflection of muons is studied with the simulation tool PROPOSAL, which accounts for multiple scattering and deflection on stochastic interactions. Deflections along individual interactions depend on the muon energy and the interaction type, and can reach up to the order of degrees -- even at TeV to PeV energies. The accumulated deflection angle can be parametrized in dependence of the final muon energy, independent of the initial muon energy. The median accumulated deflection of a propagated muon with a final energy of 500 GeV is ${\theta }_{\text{acc}}=0.10°$ with a 99 % central interval of $[0.01°,0.39°]$. This is on the order of magnitude of the directional resolution of present neutrino detectors. Furthermore, comparisons with the simulation tools MUSIC and Geant4 as well as two different muon deflection measurements are performed.

arXiv comment10 pages, 6 figures

References in corpus (10)

• Letter of Intent for KM3NeT 2.0
• The IceCube Neutrino Observatory: Instrumentation and Online Systems
• Ultrahigh-Energy Neutrino Interactions
• A Three-Dimensional Code for Muon Propagation through the Rock: MUSIC
• Muon simulation codes MUSIC and MUSUN for underground physics
• Determining the Neutrino Mass Ordering and Oscillation Parameters with KM3NeT/ORCA
• Photonuclear interaction of high energy muons and tau-leptons
• The scattering of muons in low Z materials
• Recent Improvements for the Lepton Propagator PROPOSAL
• Investigation of deflection angle for muon energy classification in muon scattering tomography via GEANT4 simulations

Cited by in corpus (3)

• Neutrino propagation in the Earth and emerging charged leptons with $\text{nuPyProp}$
• The Relevance of Muon Deflections for Neutrino Telescopes
• CORSIKA 8: A General Framework for Particle Cascade Simulations