Detection of astrophysical tau neutrino candidates in IceCube

Simple item page
dc.contributor.authorAbbasi, R.
dc.contributor.authorAckermann, M.
dc.contributor.authorAdams, J.
dc.contributor.authorAguilar, J.A.
dc.contributor.authorAhlers, M.
dc.contributor.authorAhrens, M.
dc.contributor.authorAlispach, C.
dc.contributor.authorAlves, A.A.
dc.contributor.authorAmin, N.M.
dc.contributor.authorAndeen, K.
dc.contributor.authorAnderson, T.
dc.contributor.authorAnsseau, I.
dc.contributor.authorAnton, G.
dc.contributor.authorArgüelles, C.
dc.contributor.authorAxani, S.
dc.contributor.authorBai, X.
dc.contributor.authorBalagopal, A.V.
dc.contributor.authorBarbano, A.
dc.contributor.authorBarwick, S.W.
dc.contributor.authorBastian, B.
dc.contributor.authoret al.
dc.date.issued2022
dc.descriptionPublished online: 15 November 2022
dc.description.abstractHigh-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosmic distances due to flavor mixing. When high energy tau neutrinos interact inside the IceCube detector, two spatially separated energy depositions may be resolved, the first from the charged current interaction and the second from the tau lepton decay. We report a novel analysis of 7.5 years of IceCube data that identifies two candidate tau neutrinos among the 60 “High-Energy Starting Events” (HESE) collected during that period. The HESE sample offers high purity, all-sky sensitivity, and distinct observational signatures for each neutrino flavor, enabling a new measurement of the flavor composition. The measured astrophysical neutrino flavor composition is consistent with expectations, and an astrophysical tau neutrino flux is indicated at 2.8σ significance.
dc.description.statementofresponsibilityR. Abbasi ... G. C. Hill ... A. Kyriacou ... A. Wallace ... B. J. Whelan ... et al. (IceCube Collaboration)
dc.identifier.citationEuropean Physical Journal C: Particles and Fields, 2022; 82(11):1-15
dc.identifier.doi10.1140/epjc/s10052-022-10795-y
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.urihttps://hdl.handle.net/2440/137074
dc.language.isoen
dc.publisherSpringer
dc.rights© The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecomm ons.org/licenses/by/4.0/. Funded by SCOAP3. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.
dc.source.urihttps://doi.org/10.1140/epjc/s10052-022-10795-y
dc.titleDetection of astrophysical tau neutrino candidates in IceCube
dc.typeJournal article
pubs.publication-statusPublished

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
hdl_137074.pdf
Size:
1.95 MB
Format:
Adobe Portable Document Format
Description:
Published version
Download

Collections

Physics publications