On leptogenesis with two degenerate right-chiral neutrinos

Details On leptogenesis with two degenerate right-chiral neutrinos On leptogenesis with two degenerate right-chiral neutrinos

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005czjph..55.1193t&link_type=abstract

Czechoslovak Journal of Physics, vol. 55, Issue 10, p.1193-1204

Physics

2

Seesaw Mechanism - Leptogenesis - Renormalization

Scientific paper

We analyze the predictions of the most general version of the supersymmetric minimal seesaw model with only two right-chiral neutrinos, which are degenerate in masses at the scale of Grand Unification. We apply the renormalization group technique to the running of the masses of the right-chiral neutrinos and the neutrino Yukawa couplings and find that thermal leptogenesis can account for the observed baryon asymmetry of the Universe even with a low reheating temperature, allowing to overcome the gravitino problem.

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