Workshop — Neutrino Frontiers

The neutrino oscillation discovery was a breakthrough with an impact in particle physics, astrophysics and cosmology. While most of the mixing parameters are precisely measured, key open questions remain including the neutrino absolute mass and mass ordering, the neutrino nature, the existence of CP violation in the lepton sector, of non-standard interactions and of sterile neutrinos. While the majority of the available oscillation results are understandable by considering three active neutrinos only, some anomalies are actively debated. In parallel with the progress in our knowledge of neutrino properties important advances were made in cosmology and astrophysics. Among the open problems is neutrino flavor evolution in dense astrophysical media. In particular, recent theoretical studies of dense weakly interacting many-body neutrino systems in astrophysical environments uncovered novel connections to other domains including quantum computing. Moreover, the observation of ultra-high energy neutrinos opened a new window in neutrino astronomy; while the discovery of the diffuse supernova neutrino background is expected in the foreseeable future. The goal of the workshop is to create a collaborative and brainstorming atmosphere around key open issues at the neutrino frontiers. Neutrino 2024 will take place just before the GGI program that will happen at a very timely period when running experiments might deliver first results. Crossing results from Earth experiments, astrophysics and cosmology will be a major tool to push forward progress on crucial open issues at the frontiers.