Probing high-energy interactions of atmospheric and astrophysical neutrinos

Understand

Astrophysical and atmospheric neutrinos are important probes of the powerful accelerators that produce cosmic-rays with EeV energies.

• Understanding these accelerators is a key goal of neutrino observatories, along with searches for neutrinos from supernovae, from dark matter annihilation, and other astrophysics topics.
• Here, we discuss how neutrino observatories like IceCube and future facilities like KM3NeT and IceCube-Gen2 can study the properties of high-energy (above 1 TeV) neutrino interactions.
• This is far higher than is accessible at man-made accelerators, where the highest energy neutrino beam reached only 500 GeV.