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Neutrino Interferometry for High-Precision Tests of Lorentz Symmetry with IceCube
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arxiv 1709.03434 v3 pith:KGGBAVFB submitted 2017-09-11 hep-ex hep-ph
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abstract
Lorentz symmetry is a fundamental space-time symmetry underlying the Standard Model of particle physics and gravity. However, unified theories, such as string theory, allow for violation of this symmetry. Thus, the discovery of Lorentz symmetry violation could be the first hint of these theories. Here, we use high-energy atmospheric neutrinos observed at the IceCube Neutrino Observatory to search for anomalous neutrino oscillations as signals of Lorentz violation. The large range of neutrino energies and propagation baselines, together with high statistics, let us perform the most precise test of space-time symmetry in the neutrino sector to date. We find no evidence for Lorentz violation. This allows us to constrain the size of the dimension-four operator in the Standard-Model Extension for Lorentz violation to the $10^{-28}$ level and to set limits on higher dimensional operators of that theory. These are among the most stringent limits on Lorentz violation across all fields of physics.
Forward citations
Cited by 4 Pith papers
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The Neutrino Kaleidoscope: Searches for Non-Standard Neutrino Oscillations at Neutrino Telescopes with a TeV Muon Accelerator Source
hep-ph 2025-08 conditional novelty 7.0 of 10
A TeV muon accelerator aimed at a cubic-kilometer neutrino telescope could probe sterile neutrinos and Lorentz violation orders of magnitude beyond current limits.
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TAMBO: A Deep-Valley Neutrino Observatory
astro-ph.HE 2025-07 conditional novelty 6.0 of 10
A mountain-valley array of 5,000 particle detectors could detect Earth-skimming tau neutrinos in the PeV to EeV range with high cosmic purity and an aperture larger than IceCube's above 2 PeV.
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Fundamental physics with high-energy cosmic neutrinos today and in the future
astro-ph.HE 2019-07 unverdicted novelty 2.0 of 10
High-energy astrophysical neutrinos enable stringent tests of physics beyond the Standard Model at energies and baselines unreachable by other means.
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Transforming Antarctic Ice into a Cherenkov Neutrino Detector
astro-ph.HE 2024-11 unverdicted
IceCube built a cubic-kilometer Cherenkov detector in Antarctic ice and discovered a diffuse flux of cosmic neutrinos, identified the first neutrino sources, and observed the Galactic plane in neutrinos.
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