https://doi.org/10.1140/epjc/s10052-017-5446-9
Regular Article - Theoretical Physics
The 
scotogenic models for Dirac neutrino masses
1
Department of Physics, North China Electric Power University, Baoding, 071003, China
2
College of Information Science and Technology, Hebei Agricultural University, Baoding, China
3
School of Physics and Technology, University of Jinan, Jinan, 250022, Shandong, China
4
School of Physics and Telecommunications Engineering, Zhoukou Normal University, Zhoukou, 466001, Henan, China
* e-mail: wjnwang96@aliyun.com
Received:
27
September
2017
Accepted:
2
December
2017
Published online:
19
December
2017
We construct the one-loop and two-loop scotogenic models for Dirac neutrino mass generation in the context of 
extensions of standard model. It is indicated that the total number of intermediate fermion singlets is uniquely fixed by the anomaly free condition and the new particles may have exotic charges so that the direct SM Yukawa mass term 
and the Majorana mass term 
are naturally forbidden. After the spontaneous breaking of the symmetry, the discrete 
or 
symmetry appears as the residual symmetry and gives rise to the stability of intermediate fields as DM candidates. Phenomenological aspects of lepton flavor violation, DM, leptogenesis and LHC signatures are discussed.
© The Author(s), 2017
