The low second acoustic peak in the recent Boomerang data may indicate a cosmological baryon density which is larger than allowed by standard big bane 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. (C) 2000 Published by Elsevier Science B.V.

Decaying neutrino and a high cosmological baryon density

VILLANTE, FRANCESCO LORENZO
2000

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 bane 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. (C) 2000 Published by Elsevier Science B.V.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11697/15572
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