Measurement of atmospheric neutrino oscillations with IceCube

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dc.contributor.authorAartsen, M.
dc.contributor.authorHill, G.
dc.date.issued2013
dc.description.abstractWe present the first statistically significant detection of neutrino oscillations in the high-energy regime (>20 GeV) from an analysis of IceCube Neutrino Observatory data collected in 2010 and 2011. This measurement is made possible by the low-energy threshold of the DeepCore detector (~20 GeV) and benefits from the use of the IceCube detector as a veto against cosmic-ray-induced muon background. The oscillation signal was detected within a low-energy muon neutrino sample (20-100 GeV) extracted from data collected by DeepCore. A high-energy muon neutrino sample (100 GeV-10 TeV) was extracted from IceCube data to constrain systematic uncertainties. The disappearance of low-energy upward-going muon neutrinos was observed, and the nonoscillation hypothesis is rejected with more than 5σ significance. In a two-neutrino flavor formalism, our data are best described by the atmospheric neutrino oscillation parameters |Δm(32)(2)|=(2.3(-0.5)(+0.6))×10(-3) eV(2) and sin(2)(2θ(23))>0.93, and maximum mixing is favored.
dc.description.statementofresponsibilityM. G. Aartsen ... G. C. Hill ... et al. (IceCube Collaboration)
dc.identifier.citationPhysical Review Letters, 2013; 111(8):1-6
dc.identifier.doi10.1103/PhysRevLett.111.081801
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/2440/81189
dc.language.isoen
dc.publisherAmerican Physical Soc
dc.relation.grantARC
dc.rights© 2013 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevlett.111.081801
dc.subjectAtmospheric neutrinos
dc.subjectIce cubes
dc.subjectMuon background
dc.subjectMuon neutrino
dc.subjectNeutrino oscillations
dc.subjectNon-oscillations
dc.subjectOscillation signals
dc.subjectSystematic uncertainties
dc.titleMeasurement of atmospheric neutrino oscillations with IceCube
dc.typeJournal article
pubs.publication-statusPublished

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