# Muon anomalous magnetic dipole moment in the μνSSM

• Recently, the Muon g-2 experiment at Fermilab measured the muon anomalous magnetic dipole moment (MDM), $a_\mu=(g_\mu-2)/2$, and reported that the new experimental average increases the difference between the experiment and the standard model (SM) prediction to 4.2σ. In this work, we reanalyze the muon anomalous MDM at the two-loop level in the μ from the ν Supersymmetric Standard Model ( $\mu\nu$SSM) combined with the updated experimental average. The $\mu\nu$SSM can explain the current difference between the experimental measurement and the SM theoretical prediction for the muon anomalous MDM, constrained by the 125 GeV Higgs boson mass and decays, the rare decay $\bar{B}\rightarrow X_s\gamma$, and so on. We also investigate the anomalous MDM of the electron and tau lepton, $a_e=(g_e-2)/2$ and $a_\tau=(g_\tau-2)/2$, at the two-loop level in the $\mu\nu$SSM. In addition, the decaying of the 125 GeV Higgs boson into a pair of charged leptons in the $\mu\nu$SSM is analyzed.

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Hai-Bin Zhang, Chang-Xin Liu, Jin-Lei Yang and Tai-Fu Feng. Muon anomalous magnetic dipole moment in the μνSSM[J]. Chinese Physics C. doi: 10.1088/1674-1137/ac71a6
Hai-Bin Zhang, Chang-Xin Liu, Jin-Lei Yang and Tai-Fu Feng. Muon anomalous magnetic dipole moment in the μνSSM[J]. Chinese Physics C.
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沈阳化工大学材料科学与工程学院 沈阳 110142

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## Muon anomalous magnetic dipole moment in the μνSSM

###### Corresponding author: Hai-Bin Zhang, hbzhang@hbu.edu.cn, Corresponding author
• 1. Department of Physics, Hebei University, Baoding 071002, China
• 2. Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Baoding 071002, China
• 3. CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
• 4. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
• 5. College of Physics, Chongqing University, Chongqing 400044, China
• 6. Department of Physics, Guangxi University, Nanning, 530004, China

Abstract: Recently, the Muon g-2 experiment at Fermilab measured the muon anomalous magnetic dipole moment (MDM), $a_\mu=(g_\mu-2)/2$, and reported that the new experimental average increases the difference between the experiment and the standard model (SM) prediction to 4.2σ. In this work, we reanalyze the muon anomalous MDM at the two-loop level in the μ from the ν Supersymmetric Standard Model ( $\mu\nu$SSM) combined with the updated experimental average. The $\mu\nu$SSM can explain the current difference between the experimental measurement and the SM theoretical prediction for the muon anomalous MDM, constrained by the 125 GeV Higgs boson mass and decays, the rare decay $\bar{B}\rightarrow X_s\gamma$, and so on. We also investigate the anomalous MDM of the electron and tau lepton, $a_e=(g_e-2)/2$ and $a_\tau=(g_\tau-2)/2$, at the two-loop level in the $\mu\nu$SSM. In addition, the decaying of the 125 GeV Higgs boson into a pair of charged leptons in the $\mu\nu$SSM is analyzed.

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