Supernova neutrino signal and neutrino masses: A powerful statistical approach

por Enrico Nardi (Laboratori Nazionali di Frascati -Italy and Universidad de Antioquia - Colombia)

martes 10 may. 2005 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Extracting informations on the neutrino mass values from a Supernova neutrino signal, without any reference to additional astrophysical events as time benchmarks for measuring possible neutrino time of flight delays, is a challeging statistical problem and requires powerful as well as robust methods. We describe a strategy that, with the present neutrino detectors, could allow to reach a sensitivity of the order of 1 eV. Therefore,a Galactic Supernova explosion occuring the next few years could still provide interesting informations on the neutrino masses; however we argue that future megatonne neutrino detectors will not be competitive with the next generation of triitum beta decay experiments.