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Measurement of the atmospheric ν and ν energy spectra with the ANTARES neutrino telescope

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Journal 01 May 2021 Italy, Italy, Spain, Netherlands, Italy, Spain, France, Spain, Italy, Italy, Spain, Italy Publisher:Elsevier BVJournal:Physics Letters B, volume 816, page 136,228 (issn: 0370-2693,

Authors: Annarita Margiotta; S. Sánchez Navas; B. Jisse-Jung; Robert Lahmann; Kay Graf; F. Schüssler; A. Nuñez-Castiñeyra; +142 Authors

Measurement of the atmospheric ν and ν energy spectra with the ANTARES neutrino telescope

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Abstract

This letter presents a combined measurement of the energy spectra of atmospheric $\nu_e$ and $\nu_\mu$ in the energy range between $\sim$100 GeV and $\sim$50 TeV with the ANTARES neutrino telescope. The analysis uses 3012 days of detector livetime in the period 2007--2017, and selects 1016 neutrinos interacting in (or close to) the instrumented volume of the detector, yielding shower-like events (mainly from $\nu_e+\overline \nu_e$ charged current plus all neutrino neutral current interactions) and starting track events (mainly from $\nu_\mu + \overline \nu_\mu$ charged current interactions). The contamination by atmospheric muons in the final sample is suppressed at the level of a few per mill by different steps in the selection analysis, including a Boosted Decision Tree classifier. The distribution of reconstructed events is unfolded in terms of electron and muon neutrino fluxes. The derived energy spectra are compared with previous measurements that, above 100 GeV, are limited to experiments in polar ice and, for $\nu_\mu$, to Super-Kamiokande.

Comment: Accepted to PLB

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Italy, Italy, Spain, Netherlands, Italy, Spain, France, Spain, Italy, Italy, Spain, Italy

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Keywords

electron, neutrino/e: energy spectrum, ice, KAMIOKANDE, GeV, Neutrino telescope, charged current, High Energy Physics - Experiment, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ANTARES; Atmospheric neutrinos; Neutrino telescope, atmosphere [muon], neutrino/e: particle identification, detector [neutrino], neutrino: interaction, Physics, suppression, muon: atmosphere, neutrino/e: flux, neutrino: detector, Astrophysics - High Energy Astrophysical Phenomena, data analysis method, neutral current, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], QC1-999, energy spectrum, neutrino/mu: flux, 530, TeV, Àrees temàtiques de la UPC::Física::Astronomia i astrofísica, Neutrinos, Detectors òptics, Optical detectors, neutrino/mu: particle identification, Atmospheric neutrinos, ANTARES, neutrino/mu: energy spectrum, Telescopis, background, interaction [neutrino], 500, 540, tracks, Atmosfera, :Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], FISICA APLICADA, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], experimental results, Telescopes

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