Supernova neutrino signals by liquid Argon detector and neutrino magnetic moment

Details Supernova neutrino signals by liquid Argon detector and neutrino magnetic moment Supernova neutrino signals by liquid Argon detector and neutrino magnetic moment

2011-09-13

arxiv.org/abs/1109.2667v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

7 pages, 4 figures, 3 tables, accepted for publication in Physics Letters B

Scientific paper

We study electron-neutrino and electron-antineutrino signals from a supernova with strong magnetic field detected by a 100 kton liquid Ar detector. The change of neutrino flavors by resonant spin-flavor conversions, matter effects, and neutrino self-interactions are taken into account. Different neutrino signals, characterized by neutronization burst event and the total event numbers of electron-neutrinos and electron-antineutrinos, are expected with different neutrino oscillation parameters and neutrino magnetic moment. Observations of supernova neutrino signals by a 100 kton liquid Ar detector would constrain oscillation parameters as well as neutrino magnetic moment in either normal and inverted mass hierarchies.

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