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arXiv · 2502.18256

Constraints on Lorentz-invariance violation in the neutrino sector from the ultrahigh-energy event KM3-230213A

Yu-Ming Yang·Xing-Jian Lv·Xiao-Jun Bi·Peng-Fei Yin
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Abstract

Lorentz invariance is a fundamental symmetry of spacetime and serves as the cornerstone of modern physics, supporting the constancy of the speed of light. A crucial implication of this principle is that no particle can propagate faster than this universal speed limit. In this study, we present a stringent neutrino-based test of Lorentz invariance, utilizing the highest-energy neutrino ever detected, known as event KM3-230213A. The detection of this neutrino, with measured energy of approximately 220 PeV, allows us to establish a lower bound on the scale of second-order Lorentz invariance violation, quantified as \(\Lambda_2>5.0\times 10^{19}\) GeV at 90 \% confidence level.

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Yu-Ming Yang, Xing-Jian Lv, Xiao-Jun Bi, Peng-Fei Yin. 2025-02-25. Constraints on Lorentz-invariance violation in the neutrino sector from the ultrahigh-energy event KM3-230213A. https://doi.org/10.1103/6zzg-tv4s

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