Neutrino-Astronomie/Der Ionosphärensatellit S-66

Inflation, Neutrino Baryogenesis, and (S)Neutrino-Induced Baryogenesis

We evaluate the constraints that the COBE observations put on baryogenesis in inflationary cosmologies.We consider the supersymmetric version of the proposal of Fukugita and Yanagida, that the baryon asymmetry of the universe is created by nonperturbative electroweak reprocessing of a lepton asymmetry generated in the decay of heavy right handed see-saw (s)neutrinos. We review our recent propos...

Neutrino Mass Matrix from S 4 Symmetry

The cubic symmetry S 4 contains A 4 and S 3 , both of which have been used to study neutrino mass matrices. Using S 4 as the family symmetry of a complete super-symmetric theory of leptons, it is shown how the requirement of breaking S 4 at the seesaw scale without breaking supersymmetry enforces a special form of the neutrino mass matrix which exhibits maximal ν µ − ν τ mixing as well as zero ...

Supersymmetric (S)Neutrino-Mass Induced Baryogenesis

We propose a new mechanism for baryogenesis in supersymmetric extensions of the standard model, that does not depend on (super)GUT interactions. It occurs by the non-perturbative electroweak reprocessing of a lepton asymmetry. This lepton asymmetry is generated by the effects of lepton number violating induced operators, arising from “see-saw” (s)neutrino masses, which act on scalar condensate ...

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