The Neutrino Mass Window for Baryogenesis

  title={The Neutrino Mass Window for Baryogenesis},
  author={Wilfried Buchmuller and Pasquale di Bari and Michael Plumacher},
  journal={arXiv: High Energy Physics - Phenomenology},
Interactions of heavy Majorana neutrinos in the thermal phase of the early universe may be the origin of the cosmological matter-antimatter asymmetry. This mechanism of baryogenesis implies stringent constraints on light and heavy Majorana neutrino masses. We derive an improved upper bound on the CP asymmetry in heavy neutrino decays which, together with the kinetic equations, yields an upper bound on all light neutrino masses of 0.1 eV. Lepton number changing processes at temperatures above… 
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It is necessary that the Universe possess a nonzero value of B\ensuremath{-}L prior to the epoch of fermion-number violation if baryon and lepton asymmetries are to survive.
A bound on neutrino masses from baryogenesis
Abstract Properties of neutrinos, the lightest of all elementary particles, may be the origin of the entire matter–antimatter asymmetry of the universe. This requires that neutrinos are Majorana
Baryogenesis via leptogenesis.
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    Physical review. D, Particles and fields
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It is found that the lepton-number-violating out-of-equilibrium decays of right-handed neutrinos combined with anomalous electroweak processes can generate the baryon number of the Universe, and that the scenario works for a wide range of parameters in the neutrino sector.
A Lower bound on the right-handed neutrino mass from leptogenesis
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Heavy Majorana Neutrinos and Baryogenesis
The scenario of baryogenesis through leptogenesis is reviewed in models involving heavy Majorana neutrinos. The various mechanisms of CP violation occurring in the out-of-equilibrium