Sommerfeld corrections to type-II and III leptogenesis

Details Sommerfeld corrections to type-II and III leptogenesis Sommerfeld corrections to type-II and III leptogenesis

2008-06-10

arxiv.org/abs/0806.1630v2

Nucl.Phys.B809:308-317,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures, final version. The group theory of the non-abelian Sommerfeld effect presented in this paper can be relev

Scientific paper

10.1016/j.nuclphysb.2008.10.007

We study thermal leptogenesis from decays of the electroweak triplets that
mediate neutrino masses in type-II and type-III see-saw. We find that
Sommerfeld corrections reduce the baryon asymmetry by ~30%, and that successful
leptogenesis needs triplets heavier than 1.6 TeV, beyond the discovery reach of
LHC.

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