Limits on the Mixing of Tau Neutrino to Heavy Neutrinos

Details Limits on the Mixing of Tau Neutrino to Heavy Neutrinos Limits on the Mixing of Tau Neutrino to Heavy Neutrinos

2002-08-07

arxiv.org/abs/hep-ph/0208075v1

Phys.Lett.B550:8-15,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 figures

Scientific paper

10.1016/S0370-2693(02)02769-7

Limits at 90 % c.l. on the square of the mixing strength |U_tau4|^2 between nu_tau and a mostly isosinglet heavy neutrino with mass in the range 10-290 MeV/c^2 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/c^2.

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