Observation of seven astrophysical tau neutrino candidates with IceCube
We report on a measurement of astrophysical tau neutrinos with 9.7 yr of IceCube data. Using convolutional neural networks trained on images derived from simulated events, seven candidate ντ events were found with visible energies ranging from roughly 20 TeV to 1 PeV and a median expected parent ντ...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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American Physical Society
2024
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| _version_ | 1811140402379489280 |
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| author | Abbasi, R Ackermann, M Adams, J Agarwalla, SK Aguilar, JA Ahlers, M Alameddine, JM Amin, NM Andeen, K Anton, G Argüelles, C Ashida, Y Athanasiadou, S Axani, SN Bai, X Balagopal, VA Baricevic, M Barwick, SW Basu, V Bay, R Beatty, JJ Becker Tjus, J Beise, J Bellenghi, C Benning, C BenZvi, S Berley, D Bernardini, E Besson, DZ Blaufuss, E Blot, S Bontempo, F Book, JY Boscolo Meneguolo, C Böser, S Botner, O Böttcher, J Bourbeau, E Braun, J Brinson, B Brostean-Kaiser, J Burley, RT Busse, RS Butterfield, D Campana, MA Carloni, K Carnie-Bronca, EG Chattopadhyay, S Chau, N Chen, C Sarkar, S |
| author2 | IceCube Collaboration |
| author_facet | IceCube Collaboration Abbasi, R Ackermann, M Adams, J Agarwalla, SK Aguilar, JA Ahlers, M Alameddine, JM Amin, NM Andeen, K Anton, G Argüelles, C Ashida, Y Athanasiadou, S Axani, SN Bai, X Balagopal, VA Baricevic, M Barwick, SW Basu, V Bay, R Beatty, JJ Becker Tjus, J Beise, J Bellenghi, C Benning, C BenZvi, S Berley, D Bernardini, E Besson, DZ Blaufuss, E Blot, S Bontempo, F Book, JY Boscolo Meneguolo, C Böser, S Botner, O Böttcher, J Bourbeau, E Braun, J Brinson, B Brostean-Kaiser, J Burley, RT Busse, RS Butterfield, D Campana, MA Carloni, K Carnie-Bronca, EG Chattopadhyay, S Chau, N Chen, C Sarkar, S |
| author_sort | Abbasi, R |
| collection | OXFORD |
| description | We report on a measurement of astrophysical tau neutrinos with 9.7 yr of IceCube data. Using convolutional neural networks trained on images derived from simulated events, seven candidate ντ events were found with visible energies ranging from roughly 20 TeV to 1 PeV and a median expected parent ντ energy of about 200 TeV. Considering backgrounds from astrophysical and atmospheric neutrinos, and muons from π±/K± decays in atmospheric air showers, we obtain a total estimated background of about 0.5 events, dominated by non-ντ astrophysical neutrinos. Thus, we rule out the absence of astrophysical ντ at the 5σ level. The measured astrophysical ντ flux is consistent with expectations based on previously published IceCube astrophysical neutrino flux measurements and neutrino oscillations. |
| first_indexed | 2024-09-25T04:21:25Z |
| format | Journal article |
| id | oxford-uuid:fe874c87-4b22-40c4-93e0-3bb652c38e25 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:21:25Z |
| publishDate | 2024 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:fe874c87-4b22-40c4-93e0-3bb652c38e252024-08-01T13:49:05ZObservation of seven astrophysical tau neutrino candidates with IceCubeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fe874c87-4b22-40c4-93e0-3bb652c38e25EnglishSymplectic ElementsAmerican Physical Society2024Abbasi, RAckermann, MAdams, JAgarwalla, SKAguilar, JAAhlers, MAlameddine, JMAmin, NMAndeen, KAnton, GArgüelles, CAshida, YAthanasiadou, SAxani, SNBai, XBalagopal, VABaricevic, MBarwick, SWBasu, VBay, RBeatty, JJBecker Tjus, JBeise, JBellenghi, CBenning, CBenZvi, SBerley, DBernardini, EBesson, DZBlaufuss, EBlot, SBontempo, FBook, JYBoscolo Meneguolo, CBöser, SBotner, OBöttcher, JBourbeau, EBraun, JBrinson, BBrostean-Kaiser, JBurley, RTBusse, RSButterfield, DCampana, MACarloni, KCarnie-Bronca, EGChattopadhyay, SChau, NChen, CSarkar, SIceCube CollaborationWe report on a measurement of astrophysical tau neutrinos with 9.7 yr of IceCube data. Using convolutional neural networks trained on images derived from simulated events, seven candidate ντ events were found with visible energies ranging from roughly 20 TeV to 1 PeV and a median expected parent ντ energy of about 200 TeV. Considering backgrounds from astrophysical and atmospheric neutrinos, and muons from π±/K± decays in atmospheric air showers, we obtain a total estimated background of about 0.5 events, dominated by non-ντ astrophysical neutrinos. Thus, we rule out the absence of astrophysical ντ at the 5σ level. The measured astrophysical ντ flux is consistent with expectations based on previously published IceCube astrophysical neutrino flux measurements and neutrino oscillations. |
| spellingShingle | Abbasi, R Ackermann, M Adams, J Agarwalla, SK Aguilar, JA Ahlers, M Alameddine, JM Amin, NM Andeen, K Anton, G Argüelles, C Ashida, Y Athanasiadou, S Axani, SN Bai, X Balagopal, VA Baricevic, M Barwick, SW Basu, V Bay, R Beatty, JJ Becker Tjus, J Beise, J Bellenghi, C Benning, C BenZvi, S Berley, D Bernardini, E Besson, DZ Blaufuss, E Blot, S Bontempo, F Book, JY Boscolo Meneguolo, C Böser, S Botner, O Böttcher, J Bourbeau, E Braun, J Brinson, B Brostean-Kaiser, J Burley, RT Busse, RS Butterfield, D Campana, MA Carloni, K Carnie-Bronca, EG Chattopadhyay, S Chau, N Chen, C Sarkar, S Observation of seven astrophysical tau neutrino candidates with IceCube |
| title | Observation of seven astrophysical tau neutrino candidates with IceCube |
| title_full | Observation of seven astrophysical tau neutrino candidates with IceCube |
| title_fullStr | Observation of seven astrophysical tau neutrino candidates with IceCube |
| title_full_unstemmed | Observation of seven astrophysical tau neutrino candidates with IceCube |
| title_short | Observation of seven astrophysical tau neutrino candidates with IceCube |
| title_sort | observation of seven astrophysical tau neutrino candidates with icecube |
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