Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-04-26
Phys.Lett. B333 (1994) 132-134
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTex, 6p., UAB-FT-339
Scientific paper
10.1016/0370-2693(94)91018-9
We use the constraints arising from primordial nucleosynthesis to bound the strength $F$ of non-standard neutrino-neutrino interactions, when the right-handed neutrinos participate in the interaction. We find $F < 3 \times 10^{-3}\ G_F$, which is five orders of magnitude more stringent than the limit obtained using LEP data. We also show that secret interactions of neutrinos mediated by massless particles must have a coupling $f$ less than $2 \times 10^{-5}$. This also ameliorates previous limits in the literature.
Masso' Eduard
Toldra Ramon
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