Mass Signature of Supernova Mu and Tau Neutrinos

Details Mass Signature of Supernova Mu and Tau Neutrinos Mass Signature of Supernova Mu and Tau Neutrinos

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dnp..f405b&link_type=abstract

American Physical Society, Division of Nuclear Physics Meeting, October 28-31, 1998 Santa Fe, New Mexico, abstract #F4.05

Physics

Nuclear Physics

Scientific paper

Core-collapse supernovae emit of order 10^58 neutrinos and antineutrinos of all flavors over several seconds, with average energies of 10--25 MeV. In the Sudbury Neutrino Observatory (SNO), neutrinos and antineutrinos of all flavors can be detected by reactions which break up the deuteron. For a future Galactic supernova at a distance of 10 kpc, several hundred events will be observed in SNO. The ν_μ and ν_τ neutrinos and antineutrinos are of particular interest, as a test of the supernova mechanism. In addition, it is possible to measure or limit their masses from the time dependences of the scattering rates. Under reasonable assumptions, and in the presence of the expected counting statistics, a ν_μ or ν_τ mass down to about 30 eV can be simply and robustly determined. We also show how to separately study the supernova and neutrino physics, and how changes in the assumed supernova parameters would affect the mass sensitivity.

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