%0 Journal Article
%T Tri/Bi-maximal lepton mixing and leptogenesis
%A Aristizabal Sierra, D.
%A Bazzocchi, F.
%A de Medeiros Varzielas, I.
%A Merlo, L.
%A Morisi, S.
%J Nuclear Physics B
%D 2010
%V 827
%N 1-2
%I Elsevier Science Bv
%@ 0550-3213
%G English
%F AristizabalSierra_etal2010
%O ISI:000272669900002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=512), last updated on Wed, 25 Sep 2019 11:46:40 +0000
%X In models with flavour symmetries added to the gauge group of the Standard Model the CP-violating asymmetry necessary for leptogenesis may be related with low-energy parameters. A particular case of interest is when the flavour symmetry produces exact Tri/Bi-maximal lepton mixing leading to a vanishing CP-violating asymmetry. In this paper we present a model-independent discussion that confirms this always occurs for unflavoured leptogenesis in type I see-saw scenarios, noting however that Tri/Bi-maximal mixing does not imply a vanishing asymmetry in general scenarios where there is interplay between type I and other see-saws. We also consider a specific model where the exact Tri/Bi-maximal mixing is lifted by corrections that can be parametrised by a small number of degrees of freedom and analyse in detail the existing link between low and high-energy parameters – focusing on how the deviations from Tri/Bi-maximal are connected to the parameters governing leptogenesis.
%R 10.1016/j.nuclphysb.2009.10.009
%U http://arxiv.org/abs/0908.0907
%U https://doi.org/10.1016/j.nuclphysb.2009.10.009
%P 34-58