Journal
PHYSICAL REVIEW D
Volume 90, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.065033
Keywords
-
Funding
- ITN INVISIBLES (Marie Curie Actions) [PITN-GA-2011-289442]
- CUP [CSD2008-00037]
- INFN program on Astroparticle Physics
- [FPA2011-29678]
- [PROMETEO/2009/116]
Ask authors/readers for more resources
We evaluate the contribution to N-eff of the extra sterile states in low-scale type I seesaw models (with three extra sterile states). We explore the full parameter space and find that at least two of the heavy states always reach thermalization in the early Universe, while the third one might not thermalize provided the lightest neutrino mass is below O(10(-3) eV). Constraints from cosmology therefore severely restrict the spectra of heavy states in the range 1 eV-100 MeV. The implications for neutrinoless double beta decay are also discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available