Consistency of Lorentz-invariance violation neutrino scenarios in time delay analyses

Abstract

Modifications inspired by quantum gravity in the kinematics of special relativity can manifest in various ways, including anomalies in the time of flight of massless particles and the emergence of decay channels for otherwise stable particles. Typically, these effects are studied independently; however, it may be necessary to combine both to perform a consistent analysis. In this work, we study the interplay between time-of-flight anomalies and neutrino instability in the context of a flavor-independent high-energy Lorentz-invariance violation (LIV) in the neutrino sector. Ensuring compatibility between both types of effects imposes strong constraints on the existence of early neutrinos with energies exceeding a maximum value determined by the scale of new physics. Such constraints depend on the specific LIV scenario and should be integrated into searches for high-energy neutrinos from gamma-ray bursts exhibiting LIV time shifts.

14 pages, 6 figures

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Cited by in corpus (3)

• Probes for String-Inspired Foam, Lorentz, and CPT Violations in Astrophysics
• No Flavor Anisotropy in the High-Energy Neutrino Sky Upholds Lorentz Invariance
• Superluminal constraints from ultra-high-energy neutrino events