Identifying the neutrino mass spectrum from a supernova neutrino burst

by Amol DIGHE (CERN)

Friday 12 Nov 1999, 14:00 → 14:15 Europe/Zurich

TH Auditorium (CERN)

We reconsider the conversions of supernova neutrinos, taking into account the recent data on the neutrino masses and mixing. We find the observable effects of neutrino conversions in the 3n schemes which describe the solar and atmospheric neutrino data. We determine the characteristics of the final spectra, including the earth effects, for both the normal and the inverted mass hierarchies. We study the role that the future detection of neutrinos from a galactic supernova wouldplay in the reconstruction of the neutrino mass spectrum. In particular, we find that the observations of the spectra may enable us to identify the solar neutrino solution, to determine the type of mass hierarchy (normal or inverted) and to probe the mixing |U_e3|² to values as low as 10^-4 - 10^-3.