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The Decay of Tau Leptons Produced in Neutrino-Nucleon Scatterings

Mayumi Aoki·Kaoru Hagiwara·Kentarou Mawatari·Hiroshi Yokoya
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Abstract

Energy and angular distributions of the tau decay products in the CERN-to-Gran Sasso $ν_τ$ appearance experiments are studied for the decay modes $τ\toπν$ and $τ\to l\barνν$ (l=e or mu). We find that the decay particle distributions in the laboratory frame are significantly affected by the tau polarization. Rather strong azimuthal asymmetry of $pi^-$ and $l^-$ about the tau momentum axis is predicted, which may have observable consequences even at small statistics experiments.

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Mayumi Aoki, Kaoru Hagiwara, Kentarou Mawatari, Hiroshi Yokoya. 2005-08-02. The Decay of Tau Leptons Produced in Neutrino-Nucleon Scatterings. https://doi.org/10.1016/j.nuclphysb.2005.08.036

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