Leptogenesis as the origin of matter

  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},
▪ 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… 

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