Technische Universität München
Friday, October 23, 2015 - 13:00
Leptogenesis at colliders and a sterile neutrino flavour puzzle
Right handed neutrinos with Majorana masses below the electroweak scale can simultaneously explain the observed neutrino oscillations and the baryon asymmetry of the universe in the minimal type-I seesaw model. They can be searched for at existing or proposed experiments, including LHCb, BELLE II, ATLAS, CMS, FCC-ee, CEPC and SHiP. The corner in parameter space where lepton number is approximately conserved and the mixing with electron flavour is small turns out to be interesting from a cosmological as well as experimental viewpoint. It remains to be seen how this can be motivated from a top-down approach, and whether there may be a connection to the active neutrinos flavour puzzle.