Neutrino Decoupling and Its Effect on BBN and CMB

Details Neutrino Decoupling and Its Effect on BBN and CMB Neutrino Decoupling and Its Effect on BBN and CMB

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..haw.df001m&link_type=abstract

American Physical Society, First Joint Meeting of the Nuclear Physicists of the American and Japanese Physical Societies October

Physics

Scientific paper

We analyze the decoupling of neutrinos in the early universe by solving full Boltzman equation for both degenerate and non-degenerate neutrino. We show that these result strongly affect Big-Bang nucleosynthesis and the CMB fluctuations. The marginalized likelihood functions show a slight preference for the existence of lepton asymmetry. We also briefly discuss the implication of this results to the leptogenesis by Affleck-Dine mechanism or oscillating neutrinos.

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