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Constraints on Lorentz invariance from the event KM3-230213A
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abstract
Lorentz invariance is the cornerstone of relativity theory. Its implications have been verified experimentally with a variety of approaches. The detection of a muon at extremely high energy detected by the ARCA detector in the Mediterranean sea, the most energetic particle directly measured up to date, allows to put additional constraints on Lorentz non-invariant theories. The prediction of some of those theories is that the lifetimes of particles in the laboratory frame 'decrease' rather than 'increase' with increasing $\gamma$. In this frame the sheer fact that the muon traversed the whole ARCA detector puts a lower limit on the muon lifetime in the laboratory frame, that implies upper limits on Lorentz violating parameters.
Forward citations
Cited by 3 Pith papers
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Earth rotation turns event timing into a geometric probe of UHE neutrino origin
Earth-rotation timing lowers the number of future KM3NeT events needed to exclude a dark-matter origin of KM3-230213A from ~22–27 to ~14–16.
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The Highest-Energy Neutrino Event Constrains Dark Matter-Neutrino Interactions
KM3-230213A limits dark matter-neutrino scattering to below about 1e-22 cm^2/GeV at 220 PeV, but most simple dark matter models are excluded by unitarity above MeV masses.
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`Dark' Matter Effect as a Novel Solution to the KM3-230213A Puzzle
Dark matter scattering in the Earth, sourced by a flaring blazar, can explain the KM3-230213A event while yielding few or no IceCube events in a viable parameter space.
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