Journal
PHYSICAL REVIEW LETTERS
Volume 127, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.111802
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Funding
- ERC-AdG-2015 Grant [694896]
- Swiss National Science Foundation Excellence [200020B_182864]
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In this paper, it is demonstrated that previously considered different mechanisms of baryon asymmetry generation involving two right-handed Majorana neutrinos are actually united. The study shows that the observed baryon asymmetry can be generated for all experimentally allowed values of the right-handed neutrino masses above 100 MeV, with effective leptogenesis in a broad range of parameters.
In this Letter we demonstrate that what was previously considered as different mechanisms of baryon asymmetry generation involving two right-handed Majorana neutrinos with masses far below the Grand Unified Theory scale-leptogenesis via neutrino oscillations and resonant leptogenesis-are actually united. We show that the observed baryon asymmetry can be generated for all experimentally allowed values of the right-handed neutrino masses above M-N greater than or similar to 100 MeV. Leptogenesis is effective in a broad range of the parameters, including mass splitting between two right-handed neutrinos as big as Delta M-N / M-N similar to 0.1, as well as mixing angles between the heavy and light neutrinos large enough to be accessible to planned intensity experiments or future colliders.
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