Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3594
Título: Enlarging the window for radiative leptogenesis
Autor: Branco, G. C.
Felipe, R. G.
Joaquim, F. R.
Nobre, B.M.
Palavras-chave: Neutrino Mass Matrix
Lepton-Flavor Violation
CP Violation
See-saw
Models
Baryogenesis
Symmetry
Democracy
Angles
Data: 9-Fev-2006
Editora: Elsevier Science BV
Citação: BRANCO, G. C.; FELIPE, R. G.; JOAQUIM, F. R.; NOBRE, B. M. - Enlarging the window for radiative leptogenesis. Physics Letters B. ISSN 0370-2693. Vol. 633, nr. 2-3 (2006), p. 336.344.
Resumo: We investigate the scenario of resonant thermal leptogenesis, in which the leptonic asymmetries are generated through renormalization group corrections induced at the leptogenesis scale. In the framework of the standard model extended by three heavy Majorana neutrinos with masses M(1) = M(2) << M(3) at some high scale, we show that the mass splitting and CP-violating effects induced by renormalization group corrections can lead to values of the CP asymmetries large enough for a successful leptogenesis. In this scenario, the low-energy neutrino oscillation data can also be easily accommodated. The possibility of having an underlying symmetry behind the degeneracy in the right-handed neutrino mass spectrum is also discussed. (c) 2005 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3594
ISSN: 0370-2693
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0370269305017387
Aparece nas colecções:ISEL - Física - Artigos

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