A remark on the tau-neutrino mass limit
High Energy Physics - Phenomenology
2011-07-19 v1
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.
Cite
@article{arxiv.hep-ph/9507264,
title = {A remark on the tau-neutrino mass limit},
author = {M. M. Guzzo and O. L. P. Peres and V. Pleitez and R. Zukanovich Funchal},
journal= {arXiv preprint arXiv:hep-ph/9507264},
year = {2011}
}
Comments
9 pages, RevTeX 3.0 file, 1 figure contained in a postscript file appended in the end of the document