Comparison of high-energy galactic and atmospheric tau neutrino flux

Abstract

We compare the tau neutrino flux arising from the galaxy and the earth atmosphere for 10^3 < E/GeV < 10^11. The intrinsic and oscillated tau neutrino fluxes from both sources are calculated. The intrinsic galactic ν_τ flux (E > 10^3 GeV) is calculated by considering the interactions of high-energy cosmic-rays with the matter present in our galaxy, whereas the oscillated galactic ν_τ flux is coming from the oscillation of the galactic ν_μ flux. For the intrinsic atmospheric ν_τ flux, we extend the validity of a previous calculation from E < 10^6 GeV up to E < 10^11 GeV. The oscillated atmospheric ν_τ flux is, on the other hand, rather suppressed. We find that, for 10^3 < E/GeV < 5\cdot 10^7, the oscillated ν_τ flux along the galactic plane dominates over the maximal intrinsic atmospheric ν_τ flux, i.e., the flux along the horizontal direction. We also briefly mention the presently envisaged prospects for observing these high-energy tau neutrinos.

arXiv comment12 pages, 4 figures, comparison with atmospheric tau neutrino flux added

References in corpus (18)

• Evidence for oscillation of atmospheric neutrinos
• Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
• Tau Neutrinos Favored over Sterile Neutrinos in Atmospheric Muon Neutrino Oscillations
• Observation of Tau Neutrino Interactions
• Detecting Tau Neutrino Oscillations at PeV Energies
• Detecting Nutau Oscillations as PeV Energies
• Neutrinos from propagation of ultra-high energy protons
• Tau Neutrino Appearance with a 1000 Megaparsec Baseline
• Effects of neutrino mixing on high-energy cosmic neutrino flux
• Charm Production and High Energy Atmospheric Muon and Neutrino Fluxes
• Study of Charm Production in Z Decays
• Tau neutrino fluxes from atmospheric charm
• Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array
• Prospects for observations of high-energy cosmic tau neutrinos
• Extreme Energy nu_tau Propagation Through the Earth
• Neutrino conversions in cosmological gamma-ray burst fireballs
• Charmed particle production in hadron-hadron collision
• Tau neutrinos from active galactic nuclei

Cited by in corpus (11)

• Shower Power: Isolating the Prompt Atmospheric Neutrino Flux Using Electron Neutrinos
• The intrinsic and oscillated astrophysical neutrino flavor ratios
• The energy spectrum of tau leptons induced by the high energy Earth-skimming neutrinos
• Cherenkov Tau Shower Earth-Skimming Method for PeV-EeV Tau Neutrino Observation with Ashra
• Astrophysical tau neutrino detection in kilometer-scale Cherenkov detectors via muonic tau decay
• Energy and Angular Distribution of Upward UHE Neutrinos and Signals of Low Scale Gravity: Role of Tau Decay
• Tau Neutrino Astronomy in GeV Energies
• GeV to TeV astrophysical tau neutrinos
• High Energy Astrophysical Tau Neutrinos: The Expectations
• Atmospheric and galactic tau neutrinos
• A simulation study of tau neutrino events at the ICAL detector in INO