Sommerfeld corrections to type-II and III leptogenesis
arXiv:0806.1630 · doi:10.1016/j.nuclphysb.2008.10.007
Abstract
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.
12 pages, 4 figures, final version. The group theory of the non-abelian Sommerfeld effect presented in this paper can be relevant for scenarios of Dark Matter charged under new dark gauge groups, as suggested by recent data
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Cited by in corpus (7)
- Gamma-ray and radio tests of the e+e- excess from DM annihilations
- The number density of a charged relic
- Dark Matter Through the Neutrino Portal
- Baryogenesis via Leptogenesis in Adjoint SU(5)
- Lepton FCNC in Type III Seesaw Model
- Radiative Neutrino Mass in Type III Seesaw Model
- Sommerfeld enhancement for a Yukawa potential