A way to estimate photino contamination in neutrino flux from supernova is suggested. By comparing the experimental and theoretically expected ratios of forward-peaked events in the direction of neutrino source and isotropic events one can set a limit on selectron mass. As an example the data from SN 1987A have been used to set a limit on selectron mass.
13.15 - Neutrino interactions with hadrons
14.80.Ly - Supersymmetric particles
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