Constraints on the tau neutrino mass and mixing from precise measurements of tau decay rates

We have derived constraints on the tau neutrino mass and fourth generation mixing from an analysis of the partial widths of tau lepton decays, in particular: τ̅→e̅ν<sup>-</sup>eντ, τ̅→μ̅ν<sup>-</sup>μντ, τ →π̅ντ, and τ →K̅ντ. We present predictions for the tau decay widths, a...

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Online Access:http://hdl.handle.net/2047/d20000426

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