Detection of astrophysical tau neutrino candidates in IceCube
Abstract High-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 de...
| المؤلفون الرئيسيون: | , , , , , , , , , , , , , , , , , , , |
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| مؤلفون آخرون: | |
| التنسيق: | مقال |
| اللغة: | English |
| منشور في: |
Springer Berlin Heidelberg
2022
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| الوصول للمادة أونلاين: | https://hdl.handle.net/1721.1/146558 |
| _version_ | 1826200018106712064 |
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| author | Abbasi, R. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A. A. Amin, N. M. Andeen, K. Anderson, T. Ansseau, I. Anton, G. Argüelles, C. Axani, S. Bai, X. Balagopal, A. V. Barbano, A. Barwick, S. W. Bastian, B. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Abbasi, R. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A. A. Amin, N. M. Andeen, K. Anderson, T. Ansseau, I. Anton, G. Argüelles, C. Axani, S. Bai, X. Balagopal, A. V. Barbano, A. Barwick, S. W. Bastian, B. |
| author_sort | Abbasi, R. |
| collection | MIT |
| description | Abstract
High-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 2.8
$$\sigma $$
σ
significance. |
| first_indexed | 2024-09-23T11:29:32Z |
| format | Article |
| id | mit-1721.1/146558 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:29:32Z |
| publishDate | 2022 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1465582023-08-31T20:11:32Z Detection of astrophysical tau neutrino candidates in IceCube Abbasi, R. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A. A. Amin, N. M. Andeen, K. Anderson, T. Ansseau, I. Anton, G. Argüelles, C. Axani, S. Bai, X. Balagopal, A. V. Barbano, A. Barwick, S. W. Bastian, B. Massachusetts Institute of Technology. Department of Physics Abstract High-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 2.8 $$\sigma $$ σ significance. 2022-11-21T14:20:01Z 2022-11-21T14:20:01Z 2022-11-15 2022-11-20T04:16:57Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/146558 The European Physical Journal C. 2022 Nov 15;82(11):1031 PUBLISHER_CC en https://doi.org/10.1140/epjc/s10052-022-10795-y Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Abbasi, R. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A. A. Amin, N. M. Andeen, K. Anderson, T. Ansseau, I. Anton, G. Argüelles, C. Axani, S. Bai, X. Balagopal, A. V. Barbano, A. Barwick, S. W. Bastian, B. Detection of astrophysical tau neutrino candidates in IceCube |
| title | Detection of astrophysical tau neutrino candidates in IceCube |
| title_full | Detection of astrophysical tau neutrino candidates in IceCube |
| title_fullStr | Detection of astrophysical tau neutrino candidates in IceCube |
| title_full_unstemmed | Detection of astrophysical tau neutrino candidates in IceCube |
| title_short | Detection of astrophysical tau neutrino candidates in IceCube |
| title_sort | detection of astrophysical tau neutrino candidates in icecube |
| url | https://hdl.handle.net/1721.1/146558 |
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