PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T04 Neutrino Physics
The Appearance of Tau Neutrinos in the Flux of Atmospheric Neutrinos at Super-Kamiokande
M. Mandal* and  On behalf of the Super-Kamiokande Collaboration
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Pre-published on: December 18, 2023
Published on: March 21, 2024
We present the latest results on the appearance of tau neutrinos from neutrino oscillations in the flux of atmospheric neutrinos recorded at Super-Kamiokande. The dataset is for a live-time of 6511.3 days recorded from 1996 to 2020, and accounts for all of the pure-water runs at Super-Kamiokande. The exposure of the detector is 484.2 kT-years. $428\pm92$ oscillated tau neutrino events have been observed. The measured tau neutrino normalisation is $1.36\pm0.29$. We exclude the hypothesis of no tau neutrino appearance with a significance of $4.8\sigma$.
DOI: https://doi.org/10.22323/1.449.0176
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