High-energy neutrino fluxes and flavor ratio in the Earth's atmosphere

Abstract

We calculate the atmospheric neutrino fluxes in the energy range $100$ GeV -- $10$ PeV with the use of several known hadronic models and a few parametrizations of the cosmic ray spectra which take into account the knee. The calculations are compared with the atmospheric neutrino measurements by Frejus, AMANDA, IceCube and ANTARES. An analytic description is presented for the conventional (${\nu }_{\mu }+{\bar{\nu }}_{\mu }$) and (${\nu }_e+{\bar{\nu }}_e$) energy spectra, averaged over zenith angles, which can be used to obtain test data of the neutrino event reconstruction in neutrino telescopes. The sum of the calculated atmospheric ${\nu }_{\mu }$ flux and the IceCube best-fit astrophysical flux gives the evidently higher flux as compared to the IceCube59 data, giving rise the question concerning the hypothesis of the equal flavor composition of the high-energy astrophysical neutrino flux. Calculations show that the transition from the atmospheric electron neutrino flux to the predominance of the astrophysical neutrinos occurs at $30-100$ TeV if the prompt neutrino component is taken into consideration. The neutrino flavor ratio, extracted from the IceCube data, does not reveal the trend to increase with the energy as is expected for the conventional neutrino flux in the energy range $100$ GeV - $30$ TeV. A depression of the ratio $R_{{\nu }_{\mu }/{\nu }_e}$ possibly indicates that the atmospheric electron neutrino flux obtained in the IceCube experiment contains an admixture of the astrophysical neutrinos in the range $10-50$ TeV.

arXiv commentRevtex4-1, 12 pages, 7 figures, v3: minor changes to match the version published in Phys Rev. D

References in corpus (44)

• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data
• First observation of PeV-energy neutrinos with IceCube
• KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
• Cosmic ray event generator Sibyll 2.1
• On the knee in the energy spectrum of cosmic rays
• QGSJET-II: towards reliable description of very high energy hadronic interactions
• Calculation of atmospheric neutrino flux using the interaction model calibrated with atmospheric muon data
• Testing the Hadronuclear Origin of PeV Neutrinos Observed with IceCube
• Discrepant hardening observed in cosmic-ray elemental spectra
• Energy Spectra of Abundant Nuclei of Primary Cosmic Rays from the Data of ATIC-2 Experiment: Final Results
• Spectrum of cosmic-ray nucleons and the atmospheric muon charge ratio
• Prompt neutrino fluxes from atmospheric charm
• Flux of Atmospheric Neutrinos
• Non-linear screening effects in high energy hadronic interactions
• Energy spectra of cosmic-ray nuclei at high energies
• Measurement of the atmospheric neutrino energy spectrum from 100 GeV to 400 TeV with IceCube
• Models of the Knee in the Energy Spectrum of Cosmic Rays
• Three component model of cosmic ray spectra from 10 GeV to 100 PeV
• Ice Cube Observed PeV Neutrinos from AGN Cores
• Pinpointing Extragalactic Neutrino Sources in Light of Recent IceCube Observations
• A Search for a Diffuse Flux of Astrophysical Muon Neutrinos with the IceCube 40-String Detector
• Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 59-string configuration
• On the flavor composition of the high-energy neutrino events in IceCube
• PeV neutrinos from intergalactic interactions of cosmic rays emitted by active galactic nuclei
• Demystifying the PeV Cascades in IceCube: Less (Energy) is More (Events)
• Constraints on the Extremely-high Energy Cosmic Neutrino Flux with the IceCube 2008-2009 Data
• Influence of hadronic interaction models and the cosmic ray spectrum on the high energy atmospheric muon and neutrino flux
• Measurement of the Atmospheric ${\nu }_e$ flux in IceCube
• The Energy Spectrum of Atmospheric Neutrinos between 2 and 200 TeV with the AMANDA-II Detector
• High-energy neutrinos from radio galaxies
• Pinning down the cosmic ray source mechanism with new IceCube data
• Atmospheric neutrino flux supported by recent muon experiments
• Measurement of the atmospheric ${\nu }_{\mu }$ energy spectrum from 100 GeV to 200 TeV with the ANTARES telescope
• Study of cosmic ray interaction model based on atmospheric muons for the neutrino flux calculation
• High-energy cosmic ray fluxes in the Earth atmosphere: calculations vs experiments
• Constraining Astrophysical Neutrino Flavor Composition from Leptonic Unitarity
• Describing the Observed Cosmic Neutrinos by Interactions of Nuclei with Matter
• Atmospheric muon flux at PeV energies
• A new contribution to the conventional atmospheric neutrino flux
• Hadronic Interactions at Cosmic Ray Energies
• Flavor revolution at ICECUBE horizons?
• Recent results from the ANTARES neutrino telescope
• Simulation of neutrino and charged particle production and propagation in the atmosphere

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