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arXiv · hep-ph/9307328

Mini-charged tau neutrinos?

R. Foot·H. Lew
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Abstract

Theoretically, the electric charge of the tau neutrino may be non-zero. The experimental bound on the electric charge of the tau neutrino is many orders of magnitude weaker than that for any other known neutrino. If the tau neutrino does have a small electric charge, and its mass is greater than 1 MeV, then it can annihilate sufficiently in the early Universe by electromagnetic interactions to avoid conflict with the standard cosmology model. A novel feature of this scenario is that there can be effectively less than three neutrino species present during nucleosynthesis.

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R. Foot, H. Lew. 1993-07-23. Mini-charged tau neutrinos?. https://doi.org/10.1142/s0217732393003500

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