Fundamental physics with the diffuse supernova background neutrinos

Understand

The Universe is awash with tens-of-MeV neutrinos of all species coming from all past core-collapse supernovae.

• These have never been observed, but this state of affairs will change in the near future.
• In the less than ten years, the Super-Kamiokande experiment, loaded with gadolinium, is expected to collect dozens of events induced by the scattering of neutrinos from the diffuse supernova neutrino background (DSNB).
• Next-generation projects, including Hyper-Kamiokande and Theia, are expected to collect data samples with hundreds of DSNB events after a decade of running.