Leptogenesis without violation of B-L

Details Leptogenesis without violation of B-L Leptogenesis without violation of B-L

2009-09-21

arxiv.org/abs/0909.3518v2

JHEP 0911:079,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

V2 (published version): 21 pages, 4 figures. Some explanations have been added

Scientific paper

10.1088/1126-6708/2009/11/079

We study the possibility of generating the observed baryon asymmetry via leptogenesis in the decay of heavy Standard Model singlet fermions which carry lepton number, in a framework without Majorana masses above the electroweak scale. Such scenario does not contain any source of total lepton number violation besides the Standard Model sphalerons, and the baryon asymmetry is generated by the interplay of lepton flavour effects and the sphaleron decoupling in the decay epoch.

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