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Astrophysics > High Energy Astrophysical Phenomena

arXiv:1606.06290 (astro-ph)
[Submitted on 20 Jun 2016 (v1), last revised 18 Apr 2019 (this version, v2)]

Title:Echo Technique to Distinguish Flavors of Astrophysical Neutrinos

Authors:Shirley Weishi Li, Mauricio Bustamante, John F. Beacom (Ohio State University)
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Abstract:The flavor composition of high-energy astrophysical neutrinos is a rich observable. However, present analyses cannot effectively distinguish particle showers induced by $\nu_e$ versus $\nu_\tau$. We show that this can be accomplished by measuring the intensities of the delayed, collective light emission from muon decays and neutron captures, which are, on average, greater for $\nu_\tau$ than for $\nu_e$. This new technique would significantly improve tests of the nature of astrophysical sources and of neutrino properties. We discuss the promising prospects for implementing it in IceCube and other detectors.
Comments: 13 pages, 9 figures. Matches published version
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1606.06290 [astro-ph.HE]
  (or arXiv:1606.06290v2 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.1606.06290
Journal reference: Phys. Rev. Lett. 122, 151101 (2019)
Related DOI: https://doi.org/10.1103/PhysRevLett.122.151101

Submission history

From: Shirley Li [view email]
[v1] Mon, 20 Jun 2016 20:00:02 UTC (201 KB)
[v2] Thu, 18 Apr 2019 23:01:12 UTC (202 KB)
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