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arXiv · 1906.07329

Consistent Lorentz violation features from near-TeV IceCube neutrinos

Yanqi Huang·Hao Li·Bo-Qiang Ma
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Abstract

A recent proposal to associate 60~TeV to 2~PeV IceCube neutrino events with gamma-ray bursts~(GRBs) indicates the Lorentz violation of cosmic neutrinos and leads further to the $CPT$ symmetry violation between neutrinos and antineutrinos. Here we find that another 12 northern hemisphere track events possibly correlated with GRBs from three-year IceCube data satisfy the same regularity at a lower energy scale around 1~TeV. The combined fitting indicates a Lorentz violation scale ${E}_{\rm LV}=(6.4\pm 1.5)\times10^{17}~{ \rm GeV}$ and an intrinsic time difference ${\Delta {t}_{\rm in}=(-2.8\pm 0.7)\times10^2~{\rm s}}$, from which we find an earlier emission of neutrinos than photons at the GRB source. We also suggest analyzing neutrino events detected a few minutes before the GRB trigger time to test the $CPT$ violation of ultrahigh-energy neutrinos.

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Yanqi Huang, Hao Li, Bo-Qiang Ma. 2019-06-18. Consistent Lorentz violation features from near-TeV IceCube neutrinos. https://doi.org/10.1103/physrevd.99.123018

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