BBN and sterile neutrinos
โ Scribed by F.L. Villante
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 210 KB
- Volume
- 168
- Category
- Article
- ISSN
- 0920-5632
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๐ SIMILAR VOLUMES
We discuss the BBN constraints on neutrino characteristics and the cosmic neutrino background in the case of neutrino oscillations. The general cases of non-zero initial population of the sterile state and non-zero lepton asymmetry are discussed as well.
Future neutrino and cosmological experiments will perform powerful searches for new light particles. After a general introduction we discuss how a new light fermion ('sterile neutrino') could manifest.
We investigate baryogenesis in the ฮฝMSM which is the Minimal Standard Model (MSM) extended by three right-handed neutrinos with Majorana masses being smaller than the weak scale. In this model three sterile neutrinos, which are almost right-handed states, play important roles in cosmology. The baryo