Kavli Affiliate: Angela V. Olinto
| First 5 Authors: Diksha Garg, Mary Hall Reno, Sameer Patel, Alexander Ruestle, Yosui Akaike
| Summary:
Using the Earth as a neutrino converter, tau neutrino fluxes from
astrophysical point sources can be detected by tau-lepton-induced extensive air
showers (EASs). Both muon neutrino and tau neutrino induced upward-going EAS
signals can be detected by terrestrial, sub-orbital and satellite-based
instruments. The sensitivity of these neutrino telescopes can be evaluated with
the nuSpaceSim package, which includes the nuPyProp simulation package. The
nuPyProp package propagates neutrinos ($nu_mu$, $nu_tau$) through the Earth
to produce the corresponding charged leptons (muons and tau-leptons). We use
nuPyProp to quantify the uncertainties from Earth density models, tau
depolarization effects and photo-nuclear electromagnetic energy loss models in
the charged lepton exit probabilities and their spectra. The largest
uncertainties come from electromagnetic energy loss modeling, with as much as a
20-50% difference between the models. We compare nuPyProp results with other
simulation package results.
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