Limits on the Mixing of Tau Neutrino to Heavy Neutrinos
J. Orloff, A. Rozanov, C. Santoni
Abstract
Limits at 90 % c.l. on the square of the mixing strength |Utau4|2 between nutau and a mostly isosinglet heavy neutrino with mass in the range 10-290 MeV/c2 are reported. The results were derived using the negative result of a search for neutral particles decaying into two electrons conducted by the CHARM collaboration in a neutrino beam dump experiment. Upper limits ~10-4 were obtained for neutrino masses larger than 160 MeV/c2.
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