Ultra-High Energy Neutrinos

TL;DR

Ultra-high energy neutrinos are promising cosmic messengers that can reveal extreme astrophysical phenomena and new physics, with ongoing efforts in detection and recent results from IceCube highlighting their potential.

Contribution

This paper reviews the motivation, production mechanisms, detection methods, and recent observational results related to ultra-high energy neutrinos.

Findings

IceCube detected high energy neutrino alerts.

Archival data searches support neutrino astrophysics.

Potential for discovering new physics with neutrinos.

Abstract

Ultra-high energy neutrinos hold promise as cosmic messengers to advance the understanding of extreme astrophysical objects and environments as well as possible probes for discovering new physics. This proceeding describes the motivation for measuring high energy neutrinos. A short summary of the mechanisms for producing high energy neutrinos is provided along with an overview of current and proposed modes of detection. The science reach of the field is also briefly surveyed. As an example of the potential of neutrinos as cosmic messengers, the recent results from an IceCube Collaboration real-time high energy neutrino alert and subsequent search of archival data are described.