Mini-charged tau neutrinos?

Details Mini-charged tau neutrinos? Mini-charged tau neutrinos?

1993-07-23

arxiv.org/abs/hep-ph/9307328v1

Mod.Phys.Lett. A8 (1993) 3767-3772

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages in LaTeX, 1 uuencoded figure file appended, PURD-TH-93-10

Scientific paper

10.1142/S0217732393003500

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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