On testing in-vacuo dispersion with the most energetic neutrinos: KM3-230213A case study
arXiv:2502.13093 · doi:10.1016/j.physletb.2025.139764
Abstract
The phenomenology of in-vacuo dispersion, an effect such that quantum properties of spacetime slow down particles proportionally to their energies, has been a very active research area since the advent of the Fermi telescope. One of the assumptions made in this 15-year effort is that the phenomenology of in-vacuo dispersion has a particle-energy sweet spot: the energy of the particle should be large enough to render the analysis immune to source-intrinsic confounding effects but still small enough to facilitate the identification of the source of the particle. We use the gigantic energy of KM3-230213A as an opportunity to challenge this expectation. For a neutrino of a few hundred PeVs a transient source could have been observed at lower energies several years earlier, even assuming the characteristic scale of in-vacuo dispersion to be close to the Planck scale. We report that GRB090401B is in excellent directional agreement with KM3-230213A, and we discuss a strategy of in-vacuo-dispersion analysis suitable for estimating the significance of KM3-230213A as a GRB090401B-neutrino candidate. The -value resulting from our analysis (0.015) is not small enough to warrant any excitement, but small enough to establish the point that a handful of such coincidences would be sufficient to meaningfully test in-vacuo dispersion.
arXiv commentV5: minor revisions, version published as Physics Letters B, Volume 868 (2025) 139764
References in corpus (17)
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- Potential Sensitivity of Gamma-Ray Burster Observations to Wave Dispersion in Vacuo
- Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert
- Testing Einstein's special relativity with Fermi's short hard gamma-ray burst GRB090510
- IceCube-Gen2: The Window to the Extreme Universe
- Ultraviolet modifications of dispersion relations in effective field theory
- Quantum gravity corrections to neutrino propagation
- GRBs Neutrinos as a Tool to Explore Quantum Gravity induced Lorentz Violation
- In-vacuo-dispersion features for GRB neutrinos and photons
- Towards the QFT on Curved Spacetime Limit of QGR. I: A General Scheme
- The optically unbiased GRB host (TOUGH) survey. V. VLT/X-shooter emission-line redshifts for Swift GRBs at z~2
- Limits on Neutrino Lorentz Violation from Multimessenger Observations of TXS 0506+056
- A correlation between intrinsic brightness and average decay rate of Swift UVOT GRB optical/UV light curves
- Lorentz violation from gamma-ray burst neutrinos
- Could quantum gravity slow down neutrinos?
- Investigating a population of infrared-bright gamma-ray burst host galaxies
- Association of 220 PeV Neutrino KM3-230213A with Gamma-Ray Bursts