https://doi.org/10.1140/epjc/s10052-021-09219-0
Regular Article - Theoretical Physics
The two-loop contributions to muon MDM in 
SSM
1
Department of Physics, Hebei University, 071002, Baoding, China
2
Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province, 071002, Baoding, China
3
Department of Physics, Chongqing University, 401331, Chongqing, China
Received:
21
January
2021
Accepted:
10
May
2021
Published online:
20
May
2021
The MSSM is extended to the SSM, whose local gauge group is 
. To obtain the SSM, we add the new superfields to the MSSM, namely: three Higgs singlets 
and right-handed neutrinos 
. It can give light neutrino tiny mass at the tree level through the seesaw mechanism. The study of the contribution of the two-loop diagrams to the MDM of muon under SSM provides the possibility for us to search for new physics. In the analytical calculation of the loop diagrams (one-loop and two-loop diagrams), the effective Lagrangian method is used to derive muon MDM. Here, the considered two-loop diagrams include Barr-Zee type diagrams and rainbow type two-loop diagrams, especially Z–Z rainbow two-loop diagram is taken into account. The obtained numerical results can reach 
, which can remedy the deviation between SM prediction and experimental data to some extent.
© The Author(s) 2021
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