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Measurement of the atmospheric ν μ energy spectrum from 100 GeV to 200 TeV with the ANTARES telescope

Journal article published in 2013 by S. Adrián-Martínez, A. Albert, I. Al Samarai, M. André, M. Anghinolfi, G. Anton, S. Anvar, M. Ardid ORCID, T. Astraatmadja, J.-J. Aubert, B. Baret, J. Barrios-Martí, S. Basa, V. Bertin, S. Biagi and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Preprint: policy unknown
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Postprint: policy unknown
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Published version: policy unknown

Abstract

Atmospheric neutrinos are produced during cascades initiated by the interaction of primary cosmic rays with air nuclei. In this paper, a measurement of the atmospheric νμ + ¯νμ energy spectrum in the energy range 0.1–200 TeV is presented, using data collected by the ANTARES underwater neutrino telescope from 2008 to 2011. Overall, the measured flux is ∼25 % higher than predicted by the conventional neutrino flux, and compatible with the measurements reported in ice. The flux is compatible with a single power-law dependence with spectral index γmeas = 3.58 ± 0.12. With the present statistics the contribution of prompt neutrinos cannot be established. ; Postprint (published version)