The consistency between the following two observational features of the neutrino burst from SN1987A is discussed in a model-independent way: One is the possible observation of high-flux electron neutrinos suggested by the forward excess in the Kamiokande and the Irvine-Michigan-Brookhaven data, and the other the nonobservation of extra ${\nu }_e$ in the ${}_{}{}^{37}{}_{}{}^{}\mathrm{Cl}$ experiment. In general no strong inconsistency is found. In a certain scenario it is found that consistency is achieved in a nontrivial way thanks to the path dependence of the matter-enhanced neutrino oscillation.

• Received 9 March 1988

DOI:https://doi.org/10.1103/PhysRevD.38.694