Detection of astrophysical tau neutrino candidates in IceCube

IceCube Collaboration; R Abbasi; M Ackermann; J Adams; J A Aguilar; M Ahlers; M Ahrens; C Alispach; A A Alves; N M Amin; K Andeen; T Anderson; I Ansseau; G Anton; C Argüelles; S Axani; X Bai; A V Balagopal; A Barbano; S W Barwick; B Bastian; V Basu; V Baum; S Baur; R Bay; J J Beatty; K-H Becker; J Becker Tjus; C Bellenghi; S BenZvi; D Berley; E Bernardini; D Z Besson; G Binder; D Bindig; E Blaufuss; S Blot; S Böser; O Botner; J Böttcher; E Bourbeau; J Bourbeau; F Bradascio; J Braun; S Bron; J Brostean-Kaiser; A Burgman; R S Busse; M A Campana; C Chen; D Chirkin; S Choi; B A Clark; K Clark; L Classen; A Coleman; G H Collin; J M Conrad; P Coppin; P Correa; D F Cowen; R Cross; P Dave; C De Clercq; J J DeLaunay; H Dembinski; K Deoskar; S De Ridder; A Desai; P Desiati; K D de Vries; G de Wasseige; M de With; T DeYoung; S Dharani; A Diaz; J C Díaz-Vélez; H Dujmovic; M Dunkman; M A DuVernois; E Dvorak; T Ehrhardt; P Eller; R Engel; J Evans; P A Evenson; S Fahey; A R Fazely; S Fiedlschuster; A T Fienberg; K Filimonov; C Finley; L Fischer; D Fox; A Franckowiak; E Friedman; A Fritz; P Fürst; T K Gaisser; J Gallagher; E Ganster; Xinyue Kang; Michael G Kovacevich; Naoko Kurahashi Neilson; Mark Richman; Stephen James Sclafani

doi:10.1140/epjc/s10052-022-10795-y

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Detection of astrophysical tau neutrino candidates in IceCube

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Detection of astrophysical tau neutrino candidates in IceCube

IceCube Collaboration, R Abbasi, M Ackermann, J Adams, J A Aguilar, M Ahlers, M Ahrens, C Alispach, A A Alves, N M Amin, …

The European physical journal. C, Particles and fields, v 82(11), 1031

01 Nov 2022

DOI: https://doi.org/10.1140/epjc/s10052-022-10795-y

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Abstract

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Nuclear & Particles Physics

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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 2.8σ significance.

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39 citations in Web of Science

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Title: Detection of astrophysical tau neutrino candidates in IceCube
Creators: IceCube Collaboration (Collaboration)
R Abbasi
M Ackermann
J Adams
J A Aguilar
M Ahlers
M Ahrens
C Alispach
A A Alves
N M Amin
K Andeen
T Anderson
I Ansseau
G Anton
C Argüelles
S Axani
X Bai
A V Balagopal
A Barbano
S W Barwick
B Bastian
V Basu
V Baum
S Baur
R Bay
J J Beatty
K-H Becker
J Becker Tjus
C Bellenghi
S BenZvi
D Berley
E Bernardini
D Z Besson
G Binder
D Bindig
E Blaufuss
S Blot
S Böser
O Botner
J Böttcher
E Bourbeau
J Bourbeau
F Bradascio
J Braun
S Bron
J Brostean-Kaiser
A Burgman
R S Busse
M A Campana
C Chen
D Chirkin
S Choi
B A Clark
K Clark
L Classen
A Coleman
G H Collin
J M Conrad
P Coppin
P Correa
D F Cowen
R Cross
P Dave
C De Clercq
J J DeLaunay
H Dembinski
K Deoskar
S De Ridder
A Desai
P Desiati
K D de Vries
G de Wasseige
M de With
T DeYoung
S Dharani
A Diaz
J C Díaz-Vélez
H Dujmovic
M Dunkman
M A DuVernois
E Dvorak
T Ehrhardt
P Eller
R Engel
J Evans
P A Evenson
S Fahey
A R Fazely
S Fiedlschuster
A T Fienberg
K Filimonov
C Finley
L Fischer
D Fox
A Franckowiak
E Friedman
A Fritz
P Fürst
T K Gaisser
J Gallagher
E Ganster
Xinyue Kang - Drexel University, Physics
Michael G Kovacevich - Drexel University, Physics
Naoko Kurahashi Neilson - Drexel University, Physics
Mark Richman - Drexel University
Stephen James Sclafani - Drexel University, Physics
Publication Details: The European physical journal. C, Particles and fields, v 82(11), 1031
Publisher: Springer Nature
Number of pages: 15
Resource Type: Journal article
Language: English
Academic Unit: Physics
Web of Science ID: WOS:000884904400010
Scopus ID: 2-s2.0-85142030160
Other Identifier: 991020665715604721

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Collaboration types: Domestic collaboration; International collaboration
Web of Science research areas: Physics, Particles & Fields

Detection of astrophysical tau neutrino candidates in IceCube

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