Decaying neutrino and a high cosmological baryon density
arXiv:astro-ph/0005114 · doi:10.1016/S0370-2693(00)00738-3
Abstract
The low second acoustic peak in the recent Boomerang data may indicate a cosmological baryon density which is larger than allowed by standard big bang nucleosynthesis. We show that the decay of the tau-neutrino: nu_tau -> nu_e + phi, where nu_e is the electron neutrino and phi is a scalar, essentially can assure agreement between BBN calculations and light element observations for a large baryon density.
6 pages, 2 figures, added references
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