English

Flavoured Soft Leptogenesis

High Energy Physics - Phenomenology 2009-11-13 v2 Astrophysics

Abstract

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 BLB-L asymmetry can be up to a factor O(30){\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.

Keywords

Cite

@article{arxiv.0804.4471,
  title  = {Flavoured Soft Leptogenesis},
  author = {Chee Sheng Fong and M. C. Gonzalez-Garcia},
  journal= {arXiv preprint arXiv:0804.4471},
  year   = {2009}
}

Comments

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

R2 v1 2026-06-21T10:35:19.236Z