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

作者：Yu-Ming Yang, Xing-Jian Lv, Xiao-Jun Bi, Peng‐Fei Yin · 发表于：Physical review. D/Physical review. D. · 年份：2025 · DOI：10.1103/6zzg-tv4s · 被引用次数：10 · 研究领域：Noncommutative and Quantum Gravity Theories、Particle physics theoretical and experimental studies、Cosmology and Gravitation Theories

Many quantum gravity theories predict deviations from Lorentz invariance, a foundational principle of modern physics, at energy scales exceeding the Planck scale. The presence of Lorentz invariance violation (LIV) would modify the dispersion relations of particles in vacuum and render certain decay channels kinematically permissible. In this study, we derive stringent constraints on the energy scale of LIV in the neutrino sector by investigating the impact of neutrino decay channels on the neutrino spectrum in the presence of LIV. Utilizing the spectra derived from the joint fit of KM3NeT, IceCube, and Auger data as a benchmark, we demonstrate that to be compatible with the highest-energy neutrino event ever detected, known as event KM3-230213A, the second-order LIV energy scale must satisfy Λ 2 > 5.0 × 10 19 GeV at 90% confidence level. Furthermore, our analyses indicate that the current data do not impose a stringent constraint on the energy scale associated with the first-order LIV.