TY  - JOUR
AU  - Hernandez, P.
AU  - Kekic, M.
AU  - Lopez-Pavon, J.
PY  - 2014
DA  - 2014//
TI  - Low-scale seesaw models versus N-eff
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 073009
EP  - 7pp
VL  - 89
IS  - 7
PB  - Amer Physical Soc
AB  - We consider the contribution of the extra sterile states in generic low-scale seesaw models to extra radiation, parametrized by N-eff. We find that the value of Neff is roughly independent of the seesaw scale within a wide range. We explore the full parameter space in the case of two extra sterile states and find that these models are strongly constrained by cosmological data for any value of the seesaw scale below O(100 MeV).
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1311.2614
UR  - https://doi.org/10.1103/PhysRevD.89.073009
DO  - 10.1103/PhysRevD.89.073009
LA  - English
N1  - WOS:000334317200005
ID  - Hernandez_etal2014
ER  -