Restrictions on neutrino oscillations from BBN. Non-resonant case

Abstract

New nucleosynthesis bounds on the oscillation parameters of active neutrinos mixed with a sterile one are derived for the non-resonant case. The controversy in the literature whether to use the annihilation rate or the total reaction rate for the estimates of sterile neutrino production is resolved in favor of the annihilation rate. In contrast to previous papers, the restrictions on oscillations of electronic neutrinos are weaker than those of muonic and tauonic ones.

10 pages; latex

References in corpus (1)

• Neutrino oscillations in the early universe: How large lepton asymmetry can be generated?

Cited by in corpus (6)

• BBN bounds on active-sterile neutrino mixing
• Update on neutrino mixing in the early Universe
• More General BBN Constraints on Neutrino Oscillations Parameters - Relaxed or Strengthened
• Effects of sterile neutrino and extra-dimension on big bang nucleosynthesis
• Neutrino Oscillations and the Early Universe
• Seesaw, coherence and neutrino oscillations