WIMP dark matter from gravitino decays and leptogenesis

  title={WIMP dark matter from gravitino decays and leptogenesis},
  author={Wilfried Buchmuller and Valerie Domcke and Kai Schmitz},
  journal={Physics Letters B},
Abstract The spontaneous breaking of B − L symmetry naturally accounts for the small observed neutrino masses via the seesaw mechanism. We have recently shown that the cosmological realization of B − L breaking in a supersymmetric theory can successfully generate the initial conditions of the hot early universe, i.e. entropy, baryon asymmetry and dark matter, if the gravitino is the lightest superparticle (LSP). This implies relations between neutrino and superparticle masses. Here we extend… 

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