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Abstract
To solve the μ problem and generate three tiny neutrino masses in the MSSM, the μ from ν Supersymmetric Standard Model (μνSSM) introduces three singlet right- handed neutrino superfields, which lead to the mixing of the Higgs doublets with the sneutrinos. The mixing affects the lightest Higgs boson mass and the Higgs couplings. The present observed 95% CL upper limit on signal strength of the 125 GeV Higgs boson decay h → Zγ is 6.6, which still is plenty of space to prove the existence of new physics. In this work, we investigate the signal strength of the 125 GeV Higgs boson decay channel h → Zγ in the μνSSM. Besides, we consider the two-loop electroweak corrections of muon anomalous magnetic dipole moment (MDM) in the model, which also make important contributions compared with one-loop electroweak corrections.
Details
; Jin-Lei, Yang 2 ; Shu-Min, Zhao 1 ; Yu-Bin, Liu 3 ; Tai-Fu, Feng 4 1 Hebei University, Department of Physics, Baoding, China (GRID:grid.256885.4); Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Baoding, China (GRID:grid.256885.4)
2 Hebei University, Department of Physics, Baoding, China (GRID:grid.256885.4); Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Baoding, China (GRID:grid.256885.4); Chinese Academy of Sciences, Institute of theoretical Physics, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309)
3 Nankai University, School of Physics, Tianjin, China (GRID:grid.216938.7) (ISNI:0000 0000 9878 7032)
4 Hebei University, Department of Physics, Baoding, China (GRID:grid.256885.4); Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Baoding, China (GRID:grid.256885.4); Chongqing University, College of Physics, Chongqing, China (GRID:grid.190737.b) (ISNI:0000 0001 0154 0904)