A remark on the tau-neutrino mass limit

Details A remark on the tau-neutrino mass limit A remark on the tau-neutrino mass limit

1995-07-07

arxiv.org/abs/hep-ph/9507264v1

Phys.Rev.D53:2851-2853,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, RevTeX 3.0 file, 1 figure contained in a postscript file appended in the end of the document

Scientific paper

10.1103/PhysRevD.53.2851

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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