Supernova 1987A did not test the neutrino mass hierarchy

Abstract We dispel the misconception that data from SN 1987A favor the normal neutrino mass hierarchy over the inverted hierarchy for sin 2 θ 13 ≳10 −4 . We find comparable fits for the two hierarchies. No bound can be placed on the mixing angle θ 13 even at the 1 σ level.