Large neutrino asymmetries from neutrino oscillations
Sep, 199512 pages
Published in:
- Phys.Rev.D 53 (1996) R5349-R5353
e-Print:
- hep-ph/9509327 [hep-ph]
Report number:
- UM-P-95-90,
- RCHEP-95-21
Citations per year
Abstract:
We re-examine neutrino oscillations in the early universe. Contrary to previous studies, we show that large neutrino asymmetries can arise due to oscillations between ordinary neutrinos and sterile neutrinos. This means that the Big Bang Nucleosynthesis (BBN) bounds on the mass and mixing of ordinary neutrinos with sterile neutrinos can be evaded. Also, it is possible that the neutrino asymmetries can be large (i.e. ), and hence have a significant effect on BBN through nuclear reaction rates.- 14.60.Pq
- 95.85.Ry
- cosmological model
- neutrino: asymmetry
- neutrino: oscillation
- neutrino: sterile
- matter: effect
- light nucleus: production
- production: light nucleus
- neutrino: mass difference
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