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A Posterior Analysis on IceCube Double Pulse Tau Neutrino Candidates

IceCube Collaboration; Tian, Wei; Abbasi, Rasha; Ackermann, Markus; Adams, Jenni; Aguilar, Juanan; Ahlers, M.; Ahrens, Maryon; Alispach, Cyril Martin; Alves Junior, Antonio Augusto 1; Amin, Najia Moureen Binte; An, Rui; Andeen, Karen; Anderson, Tyler; Anton, Gisela; Arguelles, Carlos; Ashida, Yosuke; Axani, Spencer; Bai, Xinhua; ... mehr


The IceCube Neutrino Observatory at the South Pole detects Cherenkov light emitted by charged secondary particles created by primary neutrino interactions. Double pulse waveforms can arise from charged current interactions of astrophysical tau neutrinos with nucleons in the ice and the subsequent decay of tau leptons. The previous 8-year tau double pulse analysis found three tau neutrino candidate events. Among them, the most promising one observed in 2014 is located very near the dust layer in the middle of the detector. A posterior analysis on this event will be presented in this paper, using a new ice model treatment with continuously varying nuisance parameters to do the targeted Monte Carlo re-simulation for tau and other background neutrino ensembles. The impact of different ice models on the expected signal and background statistics will also be discussed.

Verlagsausgabe §
DOI: 10.5445/IR/1000138618
Veröffentlicht am 06.10.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 18.03.2022
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000138618
HGF-Programm 51.13.04 (POF IV, LK 01) Kosmische Strahlung Technologien
Erschienen in Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021), Ed.: A. Kappes
Veranstaltung 37th International Cosmic Ray Conference (ICRC 2021), Online, 12.07.2021 – 23.07.2021
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Seiten Art.-Nr.: 1146
Serie Pos proceedings of science ; 395
Vorab online veröffentlicht am 06.07.2021
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