Right-handed neutrino interactions in the early universe

Details Right-handed neutrino interactions in the early universe Right-handed neutrino interactions in the early universe

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981nciml..32..289a&link_type=abstract

Nuovo Cimento, Lettere, Serie 2, vol. 32, Nov. 7, 1981, p. 289-294.

Mathematics

Logic

7

Cosmology, Elementary Particle Interactions, Neutrinos, Particle Mass, Universe, Dirac Equation, Entropy, Neutral Currents, Thermodynamic Equilibrium

Scientific paper

An analysis is made of the electroweak model for Dirac massive neutrinos, with emphasis on the interactions of the right-handed neutrinos and their consequences in cosmological problems. It is found that if right currents do not exist, no thermal equilibrium can occur for light right-handed neutrinos at temperatures lower than 100 GeV, and it is inferred that a lower bound exists on the ratio between left-handed and right-handed neutrino temperatures after the left-handed neutrino decoupling. The ratio may be evaluated using the entropy conservation law.

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