Yukawa coupling and anomalous magnetic moment of the muon: an update for the LHC era

Abstract

We study the interplay between a soft muon Yukawa coupling generated radiatively with the trilinear A-terms of the minimal supersymmetric standard model (MSSM) and the anomalous magnetic moment of the muon. In the absence of a tree-level muon Yukawa coupling the lightest smuon mass is predicted to be in the range between 750 GeV and 2700 GeV at 2 sigma, if the bino mass M_1 is below 1 TeV. Therefore, a detection of a smuon (in conjunction with a sub-TeV bino) at the LHC would directly imply a non-zero muon Yukawa coupling in the MSSM superpotential. Inclusion of slepton flavor mixing could in principle lower the mass of one smuon-like slepton below 750 GeV. However, the experimental bounds on radiative lepton decays instead strengthen the lower mass bound, with larger effects for smaller M_1, We also extend the analysis to the electron case and find that a light selectron close to the current experimental search limit may prove the MSSM electron Yukawa coupling to be non-zero.

6 pages, 2 figures, references added, version accepted for publication in PRD

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Cited by in corpus (13)

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• Explaining $(g-2{)}_{\mu }$ with Multi-TeV Sleptons
• Muon and Electron $(g-2)$ Anomalies with Non-Holomorphic Interactions in MSSM
• Radiative lepton mass and muon $g-2$ with suppressed lepton flavor and CP violations
• Explanation of electron and muon $g-2$ anomalies in AMSB
• Probing the Dark Axion Portal with Muon Anomalous Magnetic Moment
• Gauged $SU(3{)}_F$ and loop induced quark and lepton masses
• Loop-induced masses for the first two generations with optimum flavour violation
• Explaining the Muon g-2 Anomaly in Deflected AMSB for NMSSM
• Higgs Boson Yukawa Form Factors from Supersymmetric Radiative Fermion Masses
• Anomalous Magnetic Moment and Higgs Coupling of the Muon in a Sequential U(1) Gauge Model with Dark Matter
• Challenges for New Physics in the Flavour Sector
• Radiative Muon Mass Models and $(g-2{)}_{\mu }$