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Measurement of the nu(mu) energy spectrum with IceCube-79
Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia..
DESY, D-15735 Zeuthen, Germany..
Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch, New Zealand..
Univ Libre Bruxelles, Sci Fac CP230, B-1050 Brussels, Belgium..
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2017 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 77, no 10, article id 692Article in journal (Refereed) Published
Abstract [en]

IceCube is a neutrino observatory deployed in the glacial ice at the geographic South Pole. The nu(mu) energy unfolding described in this paper is based on data taken with IceCube in its 79-string configuration. A sample of muon neutrino charged-current interactions with a purity of 99.5% was selected by means of amultivariate classification process based on machine learning. The subsequent unfolding was performed using the software TRUEE. The resulting spectrum covers an E-nu-range of more than four orders of magnitude from 125 GeV to 3.2 PeV. Compared to the Honda atmospheric neutrino flux model, the energy spectrum shows an excess of more than 1.9 sigma in four adjacent bins for neutrino energies E-nu >= 177.8 TeV. The obtained spectrum is fully compatible with previous measurements of the atmospheric neutrino flux and recent IceCube measurements of a flux of high-energy astrophysical neutrinos.

Place, publisher, year, edition, pages
SPRINGER , 2017. Vol. 77, no 10, article id 692
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-340752DOI: 10.1140/epjc/s10052-017-5261-3ISI: 000413352000002OAI: oai:DiVA.org:uu-340752DiVA, id: diva2:1181453
Available from: 2018-02-08 Created: 2018-02-08 Last updated: 2018-02-08Bibliographically approved

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Botner, OlgaBurgman, AlexanderEuler, SebastianHallgren, Allande los Heros, CarlosStröm, RickardTaavola, Henric
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