The Neutrino Mass Window for Baryogenesis

@article{Buchmuller2003TheNM,
  title={The Neutrino Mass Window for Baryogenesis},
  author={Wilfried Buchmuller and Pasquale di Bari and Michael Plumacher},
  journal={arXiv: High Energy Physics - Phenomenology},
  year={2003}
}
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… 
Neutrinos in the early universe
Abstract The contribution of neutrinos to the energy density of the universe is negligible. Instead, neutrinos influence significantly non-equilibrium processes in the early universe: the formation
Aspects of thermal leptogenesis in braneworld cosmology
The mechanism of thermal leptogenesis is investigated in the high-energy regime of braneworld cosmology. Within the simplest seesaw framework with hierarchical heavy Majorana neutrinos, we study the
Neutrinos—Inner Properties and Role as Astrophysical Messengers
The observed flavor oscillations of solar and atmospheric neutrinos determine several elements of the leptonic mixing matrix, but leave open the small mixing angle Θ13, a possible CP-violating phase,
A Solution to the baryon and dark matter coincidence puzzle in a ~N dominated early universe
Abstract If a bosonic partner of a right-handed neutrino dominates the early universe sufficiently before its decay, important ingredients in the present universe are related to physics of the
Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles
We investigate the comparative studies of cosmological baryon asymmetry in different neutrino mass models with and without by considering the three-diagonal form of Dirac neutrino mass matrices and
Baryon asymmetry via leptogenesis in a neutrino mass model with complex scaling
Baryogenesis via leptogenesis is investigated in a specific model of light neutrino masses and mixing angles. The latter was proposed on the basis of an assumed complex-extended scaling property of
Neutrinos in Physics and Astrophysics
The observed flavor oscillations of solar and atmospheric neutrinos determine several elements of the leptonic mixing matrix, but leave open the small mixing angle Theta_13, a possible CP-violating
Leptogenesis beyond the limit of hierarchical heavy neutrino masses
We calculate the baryon asymmetry of the Universe in thermal leptogenesis beyond the usual lightest right-handed (RH) neutrino dominated scenario (N_1DS) and in particular beyond the hierarchical
Leptogenesis for pedestrians
Abstract During the process of thermal leptogenesis temperature decreases by about one order of magnitude while the baryon asymmetry is generated. We present an analytical description of this process
The problem of the initial conditions in flavoured leptogenesis and the tauon N2-dominated scenario
Abstract We discuss the conditions to realise a scenario of ‘strong thermal leptogenesis,’ where the final asymmetry is fully independent of the initial conditions, taking into account both heavy and
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 105 REFERENCES
Cosmic microwave background, matter–antimatter asymmetry and neutrino masses
Abstract We study the implications of thermal leptogenesis for neutrino parameters. Assuming that decays of  N 1 , the lightest of the heavy Majorana neutrinos, initiate baryogenesis, we show that
Leptogenesis from (tilde)N-dominated early universe
We investigate in detail leptogenesis by the decay of a coherent right-handed sneutrino $\~N$ having dominated the energy density of the early universe, which was originally proposed by two of the
Leptogenesis and the violation of lepton number and CP at low-energies
Abstract In the context of the minimal supersymmetric seesaw model, we study the implications of the current neutrino data for thermal leptogenesis, ββ0ν decay, and leptonic flavour- and CP-violating
Observable Consequences of Partially Degenerate Leptogenesis
In the context of the seesaw mechanism, it is natural that the large solar and atmospheric neutrino mixing angles originate separately from large 2 2 mixings in the neutrino and charged-lepton
Baryon Asymmetry, Neutrino Mixing and Supersymmetric SO(10) Unification
The baryon asymmetry of the universe can be explained by the out-of-equilibrium decays of heavy right-handed neutrinos. We analyse this mechanism in the framework of a supersymmetric extension of the
Cosmological baryon and lepton number in the presence of electroweak fermion-number violation.
  • Harvey, Turner
  • Physics, Medicine
    Physical review. D, Particles and fields
  • 1990
TLDR
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.
  • Luty
  • Physics, Medicine
    Physical review. D, Particles and fields
  • 1992
TLDR
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
Abstract In the see-saw model, the baryon asymmetry of the Universe can be generated by the decay of the lightest right-handed neutrino, νR. For a hierarchical spectrum of right-handed neutrinos, we
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
...
1
2
3
4
5
...