The signal from a galactic supernova: measuring the tau-neutrino mass

Details The signal from a galactic supernova: measuring the tau-neutrino mass The signal from a galactic supernova: measuring the tau-neutrino mass

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nuphb.380..507k&link_type=abstract

Nuclear Physics B, Volume 380, Issue 3, p. 507-542.

Physics

Nuclear Physics

14

Scientific paper

We have developed a comprehensive Monte Carlo analysis in order to simulate the neutrino signal from a galactic supernova in a large water Cerenkov detector. This allows us to demonstrate that, by exploiting the various features of the signal in a way which is largely independent of the supernova model, assuming only that the late-time behaviour of the signal is flavor independent, a sensitivity to a tau-neutrino mass down to the cosmologically interesting range of ~ 25 eV for a medium luminosity burst is possible. This is the case even though the tau signal involves ~ 50 out of ~ 10 000 total events in a detector of the size of that proposed for ``Super Kamiokande''. In addition, our results allow us to elucidate several aspects of a supernova neutrino signal in water detectors which had not been previously explored, including new results on the observability of the neutrinization burst.

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