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Abstract: We consider variations of the standard leptogenesis picture arising from thepresence of an additional scale related to the breaking of a $U1 X$ abelianflavor symmetry. We show that quite generically the presence of an additionalenergy scale might introduce new qualitative and quantitative changes onleptogenesis. Especially interesting is the possibility of having succesful TeVleptogenesis with a vanishing total CP violating asymmetry. By solving thecorresponding Boltzmann equations it is shown that these kind of scenariosencounters no difficulties in generating the Cosmic baryon asymmetry.



Autor: D. Aristizabal Sierra, Luis Alfredo Muñoz, Enrico Nardi

Fuente: https://arxiv.org/



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