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arXiv · hep-ph/9507264

A remark on the tau-neutrino mass limit

M. M. Guzzo·O. L. P. Peres·V. Pleitez·R. Zukanovich Funchal
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Abstract

We point out that the usual experimental upper bounds on the ``tau-neutrino mass'' do not apply if neutrino mixing is considered. The suppression of the population of the tau decay spectrum near the end-point, caused by mixing, may be compensated by an enhancement due to a resonant mechanism of hadronization. It is necessary therefore to analyse the whole spectrum to infer some limit to the ``tau-neutrino mass". We argue that, consequently, neutrino mixing evades the objection to interpret KARMEN anomaly as a heavy sequential neutrino.

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M. M. Guzzo, O. L. P. Peres, V. Pleitez, R. Zukanovich Funchal. 1995-07-07. A remark on the tau-neutrino mass limit. https://doi.org/10.1103/physrevd.53.2851

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