Probing the Neutrino mass spectrum though supernovae Bursts

Abstract

We first give an overview of neutrino physics and supemovae neutrinos. After. we study neutrino conversions in supernovae by considering the following proprieties: • Neutrino mass. • Neutrino flavor mixing. • Neutrino magnetic moment. We then, reconstruct the Hamiltonian, from which we find the initial mass spectrum (in the core of supernova). We then study the various possible transitions and their adiabaticity, and therefore we can deduce the final mass spectrum. From the final mass spectrum of both of normal and inverted mass hierarchy within SAM, LA/LA and LOW schemes, we study the various conversion effects: • Neutronization peak. • The nature of final spectra for all species. * Earth matter effect on the final fluxes of all species. That allows us to probe: 1) The hierarchy of the neutrino mass spectrum. 2) The solution of the solar neutrino problem. 3) The value of --LL