Journal of High Energy Physics

, 2019:89 | Cite as

Resonant leptogenesis at TeV-scale and neutrinoless double beta decay

  • Takehiko Asaka
  • Takahiro YoshidaEmail author
Open Access
Regular Article - Theoretical Physics


We investigate a resonant leptogenesis scenario by quasi-degenerate righthanded neutrinos which have TeV-scale masses. Especially, we consider the case when two right-handed neutrinos are responsible to leptogenesis and the seesaw mechanism for active neutrino masses, and assume that the CP violation occurs only in the mixing matrix of active neutrinos. In this case the sign of the baryon asymmetry depends on the Dirac and Majorana CP phases as well as the mixing angle of the right-handed neutrinos. It is shown how the yield of the baryon asymmetry correlates with these parameters. In addition, we find that the effective neutrino mass in the neutrinoless double beta decay receives an additional constraint in order to account for the observed baryon asymmetry depending on the masses and mixing angle of right-handed neutrinos.


Cosmology of Theories beyond the SM Neutrino Physics 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited


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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Department of PhysicsNiigata UniversityNiigataJapan
  2. 2.Graduate School of Science and TechnologyNiigata UniversityNiigataJapan

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