Testing Lorentz and CPT Invariance with Neutrinos

Díaz, Jorge S.

doi:10.3390/sym8100105

Cited by 17 publications

(8 citation statements)

References 92 publications

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“…However, we regard the existence of this drop and its interpretation as questionable. An overview of this and other aspects of SME applications to neutrinos is given in [34], though without a quantitative discussion.…”

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confidence: 99%

Limits on neutrino Lorentz violation from multimessenger observations of TXS 0506+056

et al. 2019

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The observation by the IceCube Collaboration of a high-energy (E 200 TeV) neutrino from the direction of the blazar TXS 0506+056 and the coincident observations of enhanced γ-ray emissions from the same object by MAGIC and other experiments can be used to set stringent constraints on Lorentz violation in the propagation of neutrinos that is linear in the neutrino energy: ∆v = −E/M 1 , where ∆v is the deviation from the velocity of light, and M 1is an unknown high energy scale to be constrained by experiment. Allowing for a difference in neutrino and photon propagation times of ∼ 10 days, we find that M 1 3 × 10 16 GeV. This improves on previous limits on linear Lorentz violation in neutrino propagation by many orders of magnitude, and the same is true for quadratic Lorentz violation.

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confidence: 99%

Limits on neutrino Lorentz violation from multimessenger observations of TXS 0506+056

et al. 2019

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“…Timing: A violation of Lorentz invariance would modify the energy-momentum relation of neutrinos and photons [185][186][187], causing them to have different speeds at different energies. This would manifest in neutrinos [188,189], photons [190][191][192][193], and gravitational waves [194] emitted at the same time from transient sources arriving at Earth at different times. Presently, electronics in neutrino telescopes can timestamp events to within a few nanoseconds [195].…”

Section: Widementioning

confidence: 99%

Fundamental Physics with High-Energy Cosmic Neutrinos

Ackermann,

Ahlers,

Anchordoqui

et al. 2019

Preprint

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High-energy cosmic neutrinos can reveal new fundamental particles and interactions, probing energy and distance scales far exceeding those accessible in the laboratory. This white paper describes the outstanding particle physics questions that high-energy cosmic neutrinos can address in the coming decade. A companion white paper discusses how the observation of cosmic neutrinos can address open questions in astrophysics. Tests of fundamental physics using high-energy cosmic neutrinos will be enabled by detailed measurements of their energy spectrum, arrival directions, flavor composition, and timing.

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“…Representative possibilities are Lorentz-and CPT-invariance violation, neutrino decay, and new long-range neutrino interactions with matter, which we expand upon below. • Timing: Modifications of the energy-momentum relation introduced by Lorentz-invariance violation cause neutrinos and photons of different energies, produced simultaneously in transient astrophysical phenomena, to have different speeds and arrive on Earth at different times [41,42,43,44]. Similar delays could be induced by BSM scattering of high-energy neutrinos off the low-energy relic neutrino background [45].…”

Section: Neutrino Observables To Probe Fundamental Physicsmentioning

confidence: 99%

Pushing the Energy and Cosmic Frontiers with High-Energy Astrophysical Neutrinos

Bustamante

2019

Preprint

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The astrophysical neutrinos recently discovered by the IceCube neutrino telescope have the highest detected neutrino energies -from TeV to PeV -and travel the longest distances -up to a few Gpc, the size of the observable Universe. These features make them naturally attractive probes of fundamental particle-physics properties, possibly tiny in size, at energy scales unreachable by any other means. The decades before the IceCube discovery saw many proposals of particle-physics studies in this direction. Today, those proposals have become a reality, in spite of prevalent astrophysical unknowns. We showcase examples of studying fundamental neutrino physics at these scales, including some of the most stringent tests of physics beyond the Standard Model.1 Based on an invited talk given at the 6th Symposium on Prospects in the Physics of Discrete Symmetries

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Testing Lorentz and CPT Invariance with Neutrinos

Cited by 17 publications

References 92 publications

Limits on neutrino Lorentz violation from multimessenger observations of TXS 0506+056

Limits on neutrino Lorentz violation from multimessenger observations of TXS 0506+056

Fundamental Physics with High-Energy Cosmic Neutrinos

Pushing the Energy and Cosmic Frontiers with High-Energy Astrophysical Neutrinos

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