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
2000-01-01
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.