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arxiv: hep-ph/0202158 · v1 · submitted 2002-02-18 · ✦ hep-ph · astro-ph· hep-ex

Supernova 1987A did not test the neutrino mass hierarchy

classification ✦ hep-ph astro-phhep-ex
keywords hierarchymassneutrinothetaangleboundcomparabledata
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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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