Ponente
Descripción
Nowadays, the origin of neutrino mass still remains unknown. One possibility is that massless neutrinos acquire a “refractive mass”, due to their interaction on ultralight dark matter while propagating towards the Earth. The future DUNE observatory would be able to discriminate this “dark” neutrino mass nature at high significance level. Under this assumption, we explore the DUNE projected sensitivity on this refractive mass, by exploiting the measurement of the time-of-flight delay acquired by supernova neutrinos during propagation. We also estimate the effect that the presence of a dark matter spike along the neutrino trajectory would have on this projected bounds. The obtained results are compared with current and future bounds from cosmology and laboratory searches.
