Neutrino oscillations in the early universe

Details Neutrino oscillations in the early universe Neutrino oscillations in the early universe

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phlb..315...46k&link_type=abstract

Physics Letters B, Volume 315, Issue 1-2, p. 46-50.

Physics

37

Scientific paper

Numerical studies are performed for neutrino oscillations for t > 1/3 seconds after the big bang. The effects of electron, positron and neutrino backgrounds are properly included. Flavor evolution of the neutrino background is dominantly smooth. However, in a certain parameter region, coherent undamped oscillations of the neutrino background are possible. In addition, neutrino CP asymmetry is found to be considerably smaller than expected. Reasons are provided for the above effects and some physical implications are discussed.
On leave of absence from the City College of New York.

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