Standard and non-standard primordial neutrinos

Details Standard and non-standard primordial neutrinos Standard and non-standard primordial neutrinos

2006-06-02

arxiv.org/abs/astro-ph/0606044v2

Phys.Scripta T127 (2006) 95-96

Astronomy and Astrophysics

Astrophysics

4 pages, no figures. Contribution to the proceedings of SNOW 2006, Stockholm, May 2-6, 2006. Typos corrected, updated referenc

Scientific paper

10.1088/0031-8949/2006/T127/032

The standard cosmological model predicts the existence of a cosmic neutrino background with a present density of about 110 cm^{-3} per flavour, which affects big-bang nucleosynthesis, cosmic microwave background anisotropies, and the evolution of large scale structures. We report on a precision calculation of the cosmic neutrino background properties including the modification introduced by neutrino oscillations. The role of a possible neutrino-antineutrino asymmetry and the impact of non-standard neutrino-electron interactions on the relic neutrinos are also briefly discussed.

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