Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3587
Título: A new bridge between leptonic CP violation and leptogenesis
Autor: BRANCO, G. C.
FELIPE, R. G.
JOAQUIM, F. R.
Palavras-chave: Neutrino Masses
Non-Conservation
Baryogenesis
Asymetry
Decays
Data: 22-Fev-2007
Editora: Elsevier Science BV
Citação: BRANCO, G. C.; FELIPE, R.G.; JOAQUIM, F.R. - A new bridge between leptonic CP violation and leptogenesis. Physics Letters B. ISSN 0370-2693. Vol. 645, nr. 5-6 (2007), p. 432-436.
Resumo: Flavour effects due to lepton interactions in the early Universe may have played an important role in the generation of the cosmological baryon asymmetry through leptogenesis. If the only source of high-energy CP violation comes from the left-handed leptonic sector, then it is possible to establish a bridge between flavoured leptogenesis and low-energy leptonic CP violation. We explore this connection taking into account our present knowledge about low-energy neutrino parameters and the matter-antimatter asymmetry observed in the Universe. In this framework, we find that leptogenesis favours a hierarchical light neutrino mass spectrum, while for quasi-degenerate and inverted hierarchical neutrino masses there is a very narrow allowed window. The absolute neutrino mass scale turns out to be m less than or similar to 0.1 eV. (c) 2007 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3587
ISSN: 0370-2693
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0370269307000056
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