High energy neutrinos from charm in astrophysical sources

TL;DR

This paper discusses how charm production in astrophysical sources leads to a high-energy neutrino flux that dominates at ultra-high energies, offering insights for future neutrino detection experiments.

Contribution

It introduces the significance of charm decay channels as a primary source of ultra-high energy neutrinos from astrophysical jets, highlighting their reduced cooling effects.

Findings

Charm decay neutrinos dominate at very high energies.

The flux from charm decays is less affected by hadronic and radiative cooling.

Implications for future ultra-high energy neutrino observatories.

Abstract

Charm production gives rise to a flux of very high energy neutrinos from astrophysical sources with jets driven by central engines, such as gamma ray bursts or supernovae with jets. The neutrino flux from semi-leptonic decays of charmed mesons is subject to much less hadronic and radiative cooling than the conventional flux from pion and kaon decays and therefore has a dominant contribution at higher energies, of relevance to future ultrahigh energy neutrino experiments.