Flavoured Soft Leptogenesis

Details Flavoured Soft Leptogenesis Flavoured Soft Leptogenesis

2008-04-29

arxiv.org/abs/0804.4471v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 5 figures. Version accepted in JHEP. Results unchanged

Scientific paper

10.1088/1126-6708/2008/06/076

We study the impact of flavour in ``soft leptogenesis'' (leptogenesis induced by soft supersymmetry breaking terms). We address the question of how flavour effects can affect the region of parameters in which successful soft leptogenesis induced by CP violation in the right-handed sneutrino mixing is possible. We find that for decays which occur in the intermediate to strong washout regimes for all flavours, the produced total $B-L$ asymmetry can be up to a factor ${\cal O}(30)$ larger than the one predicted with flavour effects being neglected. This enhancement, permits slightly larger values of the required lepton violating soft bilinear term.

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