Unified atmospheric neutrino passing fractions for large-scale neutrino telescopes

The atmospheric neutrino passing fraction, or self-veto, is defined as the probability for an atmospheric neutrino not to be accompanied by a detectable muon from the same cosmic-ray air shower. Building upon previous work, we propose a redefinition of the passing fractions by unifying the treatment...

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Bibliographic Details
Published in:arXiv.org 2018-06
Main Authors: Argüelles, Carlos A, Palomares-Ruiz, Sergio, Schneider, Austin, Wille, Logan, Yuan, Tianlu
Format: Article
Language:English
Subjects:
Atmospheric models
Computer simulation
Cosmic ray showers
Interaction models
Muons
Neutrinos
Observatories
Telescopes
Online Access:Get full text
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Summary:The atmospheric neutrino passing fraction, or self-veto, is defined as the probability for an atmospheric neutrino not to be accompanied by a detectable muon from the same cosmic-ray air shower. Building upon previous work, we propose a redefinition of the passing fractions by unifying the treatment for muon and electron neutrinos. Several approximations have also been removed. This enables performing detailed estimations of the uncertainties in the passing fractions from several inputs: muon losses, cosmic-ray spectrum, hadronic-interaction models and atmosphere-density profiles. We also study the passing fractions under variations of the detector configuration: depth, surrounding medium and muon veto trigger probability. The calculation exhibits excellent agreement with passing fractions obtained from Monte Carlo simulations. Finally, we provide a general software framework to implement this veto technique for all large-scale neutrino observatories.
ISSN:2331-8422
DOI:10.48550/arxiv.1805.11003