@article{72d28f15319d494aa4e710546812c6c6,
title = "Detection of astrophysical tau neutrino candidates in IceCube",
abstract = "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.",
author = "{Icecube Collaboration} and R. Abbasi and M. Ackermann and J. Adams and Aguilar, {J. A.} and M. Ahlers and M. Ahrens and C. Alispach and Alves, {A. A.} and Amin, {N. M.} and K. Andeen and T. Anderson and I. Ansseau and G. Anton and C. Arg{\"u}elles and S. Axani and X. Bai and Balagopal, {A. V.} and A. Barbano and Barwick, {S. W.} and B. Bastian and V. Basu and V. Baum and S. Baur and R. Bay and Beatty, {J. J.} and Becker, {K. H.} and {Becker Tjus}, J. and C. Bellenghi and S. BenZvi and D. Berley and E. Bernardini and Besson, {D. Z.} and G. Binder and D. Bindig and E. Blaufuss and S. Blot and S. B{\"o}ser and O. Botner and J. B{\"o}ttcher and E. Bourbeau and J. Bourbeau and F. Bradascio and J. Braun and S. Bron and J. Brostean-Kaiser and A. Burgman and Busse, {R. S.} and Campana, {M. A.} and C. Chen and E. Resconi",
note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",
year = "2022",
month = nov,
doi = "10.1140/epjc/s10052-022-10795-y",
language = "English",
volume = "82",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer Nature",
number = "11",
}