IceCube bounds on sterile neutrinos above 10 eV
Entity
UAM. Departamento de Física Teórica; Instituto de Física Teórica (IFT)Publisher
SpringerOpen (part of Springer Nature)Date
2018-10-04Citation
10.1140/epjc/s10052-018-6282-2
The European Physical Journal C 78.10 (2018): 807
ISSN
1434-6044 (print); 1434-6052 (online)DOI
10.1140/epjc/s10052-018-6282-2Funded by
This work is supported in part by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant agreements 674896-Elusives and 690575-InvisiblesPlus. MB and EFM acknowledge support from the “Spanish Agencia Estatal de Investigación” (AEI) and the EU “Fondo Europeo de Desarrollo Regional” (FEDER) through the project FPA2016-78645-P; and the Spanish MINECO through the “Ramón y Cajal” programme and through the Centro de Excelencia Severo Ochoa Program under Grant SEV-2012-0249. MB also acknowledges support from the Göran Gustafsson foundation. JS acknowledges support by MINECO Grant FPA2016-76005-C2-1-P, Maria de Maetzu program Grant MDM-2014-0367 of ICCUB and research Grant 2017-SGR-929Project
info:eu-repo/grantAgreement/EC/H2020/674896/EU//Elusives; info:eu-repo/grantAgreement/EC/H2020/690575/EU//InvisiblesPlus; Gobierno de España. FPA2016-78645-P; Gobierno de España. SEV-2012-0249Editor's Version
https://doi.org/10.1140/epjc/s10052-018-6282-2Subjects
IceCube; Neutrinos; Different energy range; Super-Kamiokande; 10 eV; DeepCore; FísicaRights
© The Author(s) 2018Abstract
We study the capabilities of IceCube to search
for sterile neutrinos with masses above 10 eV by analyzing
its νμ disappearance atmospheric neutrino sample. We find
that IceCube is not only sensitive to the mixing of sterile
neutrinos to muon neutrinos, but also to the more elusive
mixing with tau neutrinos through matter effects. The currently
released 1-year data shows a mild preference, between
0.75 and 3σ depending on the binning and flux adopted, for
non-zero sterile mixing. This hint overlaps with the favored
region for the sterile neutrino interpretation of the ANITA
upward shower although the null results from CHORUS and
NOMAD on νμ to ντ oscillations in vacuum exclude this
interpretation, while through a different channel and using a
different energy range. At the 99% C.L. an upper bound is
obtained that improves over the present Super-Kamiokande
and DeepCore constraints in some parts of the parameter
space. We also investigate the physics reach of the roughly
8 years of data that is already on tape as well as a forecast
of 20 years data to probe the present hint or improve upon
current constraints
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Google Scholar:Blennow, Mattias
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Fernández Martínez, L. Enrique
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Gehrlein, Julia
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Hernández-García, Josu
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