Search for astrophysical tau neutrinos in three years of IceCube data

Authors
Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; Golup, Geraldina Tamara; Walck, C.; Wallace, A.; Wallraff, M.; Wandkowsky, N.; Weaver, Ch.; Wendt, C.; Westerhoff, S.; Whelan, B. J.; Whitehorn, N.; Wiebe, K.; Wiebusch, C. H.; Wille, L.; Williams, D. R.; Wissing, H.; Wolf, M.; Wood, T. R.; Woschnagg, K.; Xu, D. L.; Xu, X. W.; Xu, Y.; Yanez, J. P.; Yodh, G.; Yoshida, S.; Zoll, M.
Publication Year
2016
Language
English
Format
article
Status
Published version
Description
The IceCube Neutrino Observatory has observed a diffuse flux of TeV-PeV astrophysical neutrinos at 5.7σ significance from an all-flavor search. The direct detection of tau neutrinos in this flux has yet to occur. Tau neutrinos become distinguishable from other flavors in IceCube at energies above a few hundred TeV, when the cascade from the tau neutrino charged current interaction becomes resolvable from the cascade from the tau lepton decay. This paper presents results from the first dedicated search for tau neutrinos with energies between 214 TeV and 72 PeV in the full IceCube detector. The analysis searches for IceCube optical sensors that observe two separate pulses in a single event - one from the tau neutrino interaction and a second from the tau decay. No candidate events were observed in three years of IceCube data. For the first time, a differential upper limit on astrophysical tau neutrinos is derived around the PeV energy region, which is nearly 3 orders of magnitude lower in energy than previous limits from dedicated tau neutrino searches.
Fil: Aartsen, M. G.. University of Adelaide; Australia
Fil: Abraham, K.. Technische Universitat München; Alemania
Fil: Ackermann, M.. Deutsches Elektronen-Synchrotron; Alemania
Fil: Adams, J.. University Of Canterbury; Nueva Zelanda
Fil: Aguilar, J. A.. Université Libre de Bruxelles; Bélgica
Fil: Golup, Geraldina Tamara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Vrije Unviversiteit Brussel; Bélgica
Fil: Walck, C.. Stockholms Universitet; Suecia
Fil: Wallace, A.. University of Adelaide; Australia
Fil: Wallraff, M.. Rwth Aachen University; Alemania
Fil: Wandkowsky, N.. University of Wisconsin; Estados Unidos
Fil: Weaver, Ch.. University of Alberta; Canadá
Fil: Wendt, C.. University of Wisconsin; Estados Unidos
Fil: Westerhoff, S.. University of Wisconsin; Estados Unidos
Fil: Whelan, B. J.. University of Adelaide; Australia
Fil: Whitehorn, N.. University of Wisconsin; Estados Unidos
Fil: Wiebe, K.. University of Mainz; Alemania
Fil: Wiebusch, C. H.. Rwth Aachen University; Alemania
Fil: Wille, L.. University of Wisconsin; Estados Unidos
Fil: Williams, D. R.. University of Alabama at Birmingahm; Estados Unidos
Fil: Wissing, H.. University of Maryland; Estados Unidos
Fil: Wolf, M.. Stockholms Universitet; Suecia
Fil: Wood, T. R.. University of Alberta; Canadá
Fil: Woschnagg, K.. University of California; Estados Unidos
Fil: Xu, D. L.. University of Alabama at Birmingahm; Estados Unidos
Fil: Xu, X. W.. Southern University; Estados Unidos
Fil: Xu, Y.. Stony Brook University; Estados Unidos
Fil: Yanez, J. P.. Deutsches Elektronen-Synchrotron DESY; Alemania
Fil: Yodh, G.. University of California; Estados Unidos
Fil: Yoshida, S.. Chiba University; Japón
Fil: Zoll, M.. Stockholms Universitet; Suecia
Subject
Neutrino Astronomy
Neutrino Observatory
IceCube
Astronomía
Ciencias Físicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/63353