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Supernova 1987A did not test the neutrino mass hierarchy
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abstract
We dispel the misconception that data from SN 1987A favor the normal neutrino mass hierarchy over the inverted hierarchy for $\sin^2 \theta_{13} \gsim 10^{-4}$. We find comparable fits for the two hierarchies. No bound can be placed on the mixing angle $\theta_{13}$ even at the 1$\sigma$ level.
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The flux of electron antineutrinos from supernova SN1987A data
A refined fit of the SN1987A antineutrino data finds accretion at about 99% confidence and a small, theory-compatible neutron fraction, closing a tension in older analyses.
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