منابع مشابه
Leptogenesis from Right-handed Neutrino Decays to Right-handed Leptons
We investigate what would be the consequences for leptogenesis of the existence of a charged SU(2)L singlet scalar δ . If such a scalar particle exists it allows the right-handed neutrinos to couple not only to left-handed lepton and Higgs doublets as in ordinary leptogenesis, but also to a right-handed charged lepton and a δ. This provides a new source of leptogenesis which can be successful i...
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Instead of creating the observed baryon asymmetry of the universe by the decay of right-handed (RH) neutrinos to left-handed leptons, we propose to generate it dominantly by the decay of the RH neutrinos to RH leptons. This mechanism turns out to be successful in large regions of parameter space. It may work, in particular, at a scale as low as ∼ TeV, with no need to invoke quasi-degenerate RH ...
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A simple argument based on an SU(3) gauged horizontal symmetry is presented that connects the explanation for three generations of matter with the existence of a triplet of right-handed neutrinos. This rationale for right-handed neutrinos is analogous to, but completely independent of, grand unification or extra universal dimensions. A brief discussion of the supersymmetrized SU(3) model is als...
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We make an analytic and numerical study of leptogenesis in the framework of the (Supersymmetric) Standard Model plus the seesaw mechanism with a U(1) family symmetry and single right-handed neutrino dominance. We show that that there is a decoupling between the low energy neutrino observables and the leptogenesis predictions, but that nevertheless leptogenesis is capable of resolving ambiguitie...
متن کاملWhy Are We Right Handed
ness for according to himself uncivilized man tends to the same practice. The wild aborigines in the Andaman Islands use their right hands for the actual discharge of the arrow from the bow. It is the same with semi-civilized races on the N. W. Frontier, in Somaliland, and elsewhere that I have observed. Let Ur. Jaensch more carefully observe an infant and he will see its pronounced tendency to...
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ژورنال
عنوان ژورنال: American Entomologist
سال: 2008
ISSN: 2155-9902,1046-2821
DOI: 10.1093/ae/54.1.4