Observation of seven astrophysical tau neutrino candidates with IceCube
We report on a measurement of astrophysical tau neutrinos with 9.7 years 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...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Internet publication |
| Language: | English |
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2024
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| _version_ | 1811139310337916928 |
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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 V, AB Baricevic, M Barwick, SW Basu, V Bay, R Beatty, JJ Tjus, JB Beise, J Bellenghi, C Benning, C BenZvi, S Berley, D Bernardini, E Besson, DZ Blaufuss, E Blot, S Bontempo, F Book, JY Meneguolo, CB 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 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 V, AB Baricevic, M Barwick, SW Basu, V Bay, R Beatty, JJ Tjus, JB Beise, J Bellenghi, C Benning, C BenZvi, S Berley, D Bernardini, E Besson, DZ Blaufuss, E Blot, S Bontempo, F Book, JY Meneguolo, CB 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 Sarkar, S |
| author_sort | Abbasi, R |
| collection | OXFORD |
| description | We report on a measurement of astrophysical tau neutrinos with 9.7 years 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 | 2024-09-25T04:04:03Z |
| format | Internet publication |
| id | oxford-uuid:c370baf0-0c71-41b9-97c2-46f2b8a17d63 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:04:03Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | oxford-uuid:c370baf0-0c71-41b9-97c2-46f2b8a17d632024-05-10T11:50:34ZObservation of seven astrophysical tau neutrino candidates with IceCubeInternet publicationhttp://purl.org/coar/resource_type/c_7ad9uuid:c370baf0-0c71-41b9-97c2-46f2b8a17d63EnglishSymplectic Elements2024Abbasi, RAckermann, MAdams, JAgarwalla, SKAguilar, JAAhlers, MAlameddine, JMAmin, NMAndeen, KAnton, GArgüelles, CAshida, YAthanasiadou, SAxani, SNBai, XV, ABBaricevic, MBarwick, SWBasu, VBay, RBeatty, JJTjus, JBBeise, JBellenghi, CBenning, CBenZvi, SBerley, DBernardini, EBesson, DZBlaufuss, EBlot, SBontempo, FBook, JYMeneguolo, CBBöser, SBotner, OBöttcher, JBourbeau, EBraun, JBrinson, BBrostean-Kaiser, JBurley, RTBusse, RSButterfield, DCampana, MACarloni, KCarnie-Bronca, EGChattopadhyay, SChau, NSarkar, SIceCube CollaborationWe report on a measurement of astrophysical tau neutrinos with 9.7 years 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 V, AB Baricevic, M Barwick, SW Basu, V Bay, R Beatty, JJ Tjus, JB Beise, J Bellenghi, C Benning, C BenZvi, S Berley, D Bernardini, E Besson, DZ Blaufuss, E Blot, S Bontempo, F Book, JY Meneguolo, CB 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 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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