Leptogenesis as the origin of matter

@article{Buchmuller2005LeptogenesisAT,
  title={Leptogenesis as the origin of matter},
  author={Wilfried Buchmuller and Roberto D. Peccei and Tsutomu. T. Yanagida},
  journal={Annual Review of Nuclear and Particle Science},
  year={2005},
  volume={55},
  pages={311-355}
}
▪ Abstract We explore in some detail the hypothesis that the generation of a primordial lepton-antilepton asymmetry (Leptogenesis) early on in the history of the Universe is the root cause for the origin of matter. After explaining the theoretical conditions for producing a matter-antimatter asymmetry in the Universe we detail how, through sphaleron processes, it is possible to transmute a lepton asymmetry—or, more precisely, a (B – L)-asymmetry—into a baryon asymmetry. Because Leptogenesis… 

Figures from this paper

Baryogenesis via leptogenesis: Spontaneous B and L violation

In order to address the baryon asymmetry in the Universe one needs to understand the origin of baryon (B) and lepton (L) number violation. In this article, we discuss the mechanism of baryogenesis

Leptogenesis from oscillations of heavy neutrinos with large mixing angles

A bstractThe extension of the Standard Model by heavy right-handed neutrinos can simultaneously explain the observed neutrino masses via the seesaw mechanism and the baryon asymmetry of the Universe

New physics in the lepton sector

This thesis addresses some scenarios of new physics as well as their consequences on the lepton sector. The fact that neutrinos are massive is one of the problems left unsolved by the Standard Model.

Gravitino Leptogenesis

We explore here a new mechanism by which the out of equilibrium decay of heavy gravitinos, followed by possible R-parity violating decays in the Minimal Supersymmetric Standard Model (MSSM) can

Leptogenesis in 331 Models

We discuss some fundamental notions on the construction of models for particle physics based on the 331 symmetry group, and address the problems of neutrino masses and leptogenesis. We show that in

Cosmological Matter-antimatter Asymmetry

The observed matter-antimatter asymmetry of the Universe is a big puzzle in particle physics and cosmology. Although the hot Big Bang model of cosmology is very successful in predicting the cosmic

Theory and Phenomenology of Dirac Leptogenesis

Dirac leptogenesis, in which neutrinos are purely Dirac and develop small but nonzero effective masses without the aid of the see-saw mechanism, provides an interesting alternative to the standard

Baryogenesis from the weak scale to the GUT scale.

We review the current status of baryogenesis with emphasis on electroweak baryogenesis and leptogenesis. The first detailed studies were carried out for SU(5) GUT models where CP-violating decays of

Throwing away antimatter via neutrino oscillations during the reheating era

The simplest possibility to explain the baryon asymmetry of the Universe is to assume that radiation is created asymmetrically between baryons and anti-baryons after the inflation. We propose a new
...

References

SHOWING 1-10 OF 149 REFERENCES

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

SPECIAL ISSUE: Violation of CP in variance, C asymmetry, and baryon asymmetry of the universe

This form of notation is connected with the quark concept; we ascribe to the/?, n, and Л quarks n c = + I, and to antiquarks, и,. = — 1. The theory proposes that under laboratory conditions processes
...