Flavor Transition Mechanisms of Propagating Astrophysical Neutrinos -A Model Independent Parametrization

TL;DR

This paper introduces a model-independent way to describe how astrophysical neutrino flavors change during propagation, aiding future neutrino telescopes in identifying flavor ratios and understanding underlying transition mechanisms.

Contribution

It proposes a novel, model-independent parametrization for neutrino flavor transitions, tested against various models, to improve interpretation of astrophysical neutrino observations.

Findings

The parametrization effectively describes different flavor transition models.

It enables observational testing of flavor transition mechanisms.

The approach is adaptable for future neutrino telescope data analysis.

Abstract

One of the important goals for future neutrino telescopes is to identify the flavors of astrophysical neutrinos and therefore determine the flavor ratio. The flavor ratio of astrophysical neutrinos observed on the Earth depends on both the initial flavor ratio at the source and flavor transitions taking place during propagations of these neutrinos. We propose a model independent parametrization for describing the above flavor transitions. A few flavor transition models are employed to test our parametrization. The observational test for flavor transition mechanisms through our parametrization is discussed.