The natural explanation of the muon anomalous magnetic moment via the electroweak supersymmetry from the GmSUGRA in the MSSM

Waqas Ahmed (School of Mathematics and Physics, Hubei Polytechnic University, Huangshi, China) ; Imtiaz Khan (CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China) ; Jinmian Li (College of Physics, Sichuan University, Chengdu, China) ; Tianjun Li (CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China) ; Shabbar Raza (Department of Physics, Federal Urdu University of Arts, Science and Technology, Karachi, Pakistan) ; et al. - Show all 6 authors

The Fermi-Lab Collaboration has announced the results for the measurement of muon anomalous magnetic moment. Combining with the previous results by the BNL experiment, we have 4.2σ deviation from the Standard Model (SM), which strongly implies the new physics around 1 TeV. To explain the muon anomalous magnetic moment naturally, we analyze the corresponding five Feynman diagrams in the supersymmetry SMs (SSMs), and show that the Electroweak Supersymmetry (EWSUSY) is definitely needed. We realize the EWSUSY in the Minimal SSM (MSSM) with Generalized Minimal Supergravity (GmSUGRA). With the Feynman diagram inspired focus scan and general scan, we find large viable parameter space, which is consistent with all the current experimental constraints. In particular, the Lightest Supersymmetric Particle (LSP) neutralino can be at least as heavy as 550 GeV. Most of the viable parameter space can be probed at the future HL-LHC, while we do need the future HE-LHC to probe some viable parameter space. However, it might still be challenge if R-parity is violated.

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      "full_name": "Ahmed, Waqas", 
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      "surname": "Li", 
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      "value": "The Fermi-Lab Collaboration has announced the results for the measurement of muon anomalous magnetic moment. Combining with the previous results by the BNL experiment, we have 4.2\u03c3 deviation from the Standard Model (SM), which strongly implies the new physics around 1 TeV. To explain the muon anomalous magnetic moment naturally, we analyze the corresponding five Feynman diagrams in the supersymmetry SMs (SSMs), and show that the Electroweak Supersymmetry (EWSUSY) is definitely needed. We realize the EWSUSY in the Minimal SSM (MSSM) with Generalized Minimal Supergravity (GmSUGRA). With the Feynman diagram inspired focus scan and general scan, we find large viable parameter space, which is consistent with all the current experimental constraints. In particular, the Lightest Supersymmetric Particle (LSP) neutralino can be at least as heavy as 550 GeV. Most of the viable parameter space can be probed at the future HL-LHC, while we do need the future HE-LHC to probe some viable parameter space. However, it might still be challenge if R-parity is violated."
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Published on:
25 March 2022
Publisher:
Elsevier
Published in:
Physics Letters B , Volume 827 C (2022)

Article ID: 136879
DOI:
https://doi.org/10.1016/j.physletb.2022.136879
Copyrights:
The Authors
Licence:
CC-BY-3.0

Fulltext files: