Physics – High Energy Physics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..272.1634e&link_type=abstract
Proceedings of the XXVI International Conference on High Energy Physics. Vol. II. AIP Conference Proceedings, Volume 272, pp. 1
Physics
High Energy Physics
Particle-Theory And Field-Theory Models Of The Early Universe
Scientific paper
The implications of primordial nucleosynthesis on neutrino masses, magnetic moments, and mixing angles are discussed. Right-handed helicity states of a Dirac neutrino may be excited by collisions unless the mass and the magnetic moment are small enough. The observed galactic magnetic fields may also set limits on the Dirac neutrino masses and magnetic moments. Oscillations between inert and flavor state neutrinos are severely constrained by primordial nucleosynthesis, and useful bounds can be obtained for the oscillation explanations of the solar and atmospheric neutrino fluxes, as well as the Majoron models with pseudo-Dirac neutrinos.
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