Conflict between the identification of cosmic neutrino source and the sensitivity to mixing angles in neutrino telescope

TL;DR

This paper discusses the challenge of simultaneously identifying cosmic neutrino sources and measuring neutrino mixing angles, highlighting the mutual dependence and degeneracy in their determination.

Contribution

It analyzes the conflict between source identification and mixing angle sensitivity in neutrino telescopes, proposing the use of long baseline oscillation probabilities as a complementary approach.

Findings

Neutrino fluxes depend on initial fluxes and flavor mixing.

Source identification and mixing angle measurement are mutually dependent.

Long baseline oscillation probabilities can help resolve degeneracies.

Abstract

Neutrino fluxes at telescopes depend on both initial fluxes out of astronomical bursts and flavor mixing during their travel to the earth. However, since the information on the initial composition requires better precision in mixing angles and vice versa, the neutrino detection at telescopes for itself cannot provide solutions to the both problems. Thus, a probability to be measured at long baseline oscillation is considered as a complement to the telescope, and problems like source identification and parameter degeneracy are examined under a few assumptions.