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Determining neutrino oscillation parameters from atmospheric muon neutrino disappearance with three years of IceCube DeepCore data
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2015 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 91, no 7, 072004Article in journal (Refereed) Published
Abstract [en]

We present a measurement of neutrino oscillations via atmospheric muon neutrino disappearance with three years of data of the completed IceCube neutrino detector. DeepCore, a region of denser IceCube instrumentation, enables the detection and reconstruction of atmospheric muon neutrinos between 10 and 100 GeV, where a strong disappearance signal is expected. The IceCube detector volume surrounding DeepCore is used as a veto region to suppress the atmospheric muon background. Neutrino events are selected where the detected Cherenkov photons of the secondary particles minimally scatter, and the neutrino energy and arrival direction are reconstructed. Both variables are used to obtain the neutrino oscillation parameters from the data, with the best fit given by Delta m(32)(2) = 2.72(-0.20)(+0.19) x 10(-3) eV(2) and sin(2)theta(23) = 0.53(-0.12)(+0.09) (normal mass ordering assumed). The results are compatible, and comparable in precision, to those of dedicated oscillation experiments.

Place, publisher, year, edition, pages
2015. Vol. 91, no 7, 072004
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-252172DOI: 10.1103/PhysRevD.91.072004ISI: 000352257500002OAI: oai:DiVA.org:uu-252172DiVA: diva2:810181
Available from: 2015-05-06 Created: 2015-05-04 Last updated: 2017-12-04Bibliographically approved

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Boersma, David J.Botner, OlgaEuler, SebastianHallgren, Allande los Heros, Carlos PerezStröm, RickardTaavola, Henric

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High Energy Physics
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Physical Review D
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