Non-standard interaction effects on astrophysical neutrino fluxes

TL;DR

This paper explores how new physics beyond the Standard Model can significantly alter the expected flavor ratios of high-energy astrophysical neutrinos detected by telescopes.

Contribution

It introduces a method to analyze the impact of non-standard interactions on neutrino flavor ratios, highlighting potential deviations from Standard Model predictions.

Findings

Standard Model flavor ratio predictions can be significantly modified by new physics effects.

Flavor ratios _ and _/(_+_) are sensitive indicators of new physics.

Analysis suggests detectable deviations in neutrino flavor ratios at high energies.

Abstract

We investigate new physics effects in the production and detection of high energy neutrinos at neutrino telescopes. Analysing the flavor ratios \phi_\mu/\phi_\tau and \phi_\mu/(\phi_\tau+\phi_e), we find that the Standard Model predictions for them can be sensibly altered by new physics effects.