Testing Lorentz invariance violation using cosmogenic neutrinos

TL;DR

This paper extends a cosmic ray propagation simulation to include Lorentz invariance violation effects on neutrinos, predicting fluxes that help constrain new physics beyond the Standard Model.

Contribution

We developed an extended simulation tool to model Lorentz violation effects on neutrino propagation and predicted fluxes under various astrophysical scenarios.

Findings

Predicted cosmogenic neutrino fluxes vary with Lorentz violation parameters.

Results can be used to set bounds on Lorentz violation in the neutrino sector.

Extended simulation framework enables testing fundamental physics with cosmic neutrinos.

Abstract

Secondary messengers such as neutrinos and photons are expected to be produced in interactions of ultra-high-energy cosmic rays (UHECRs) with extragalactic background photons. Their propagation could be altered by the effects of Lorentz invariance violation. In this work, we have developed an extension of the SimProp code that includes some Lorentz-violating scenarios affecting the propagation of neutrinos. We present the corresponding expected cosmogenic neutrino fluxes for three different astrophysical scenarios for the production of UHECRs. These results can be used to put constraints on the scale of Lorentz violation in the neutrino sector.