Axion-Like Particles, Two-Higgs-Doublet Models, Leptoquarks, and the Electron and Muon \(g − 2\)

  • Wai-Yee Keung Department of Physics, University of Illinois at Chicago, Illinois 60607 USA
  • Danny Marfatia Department of Physics & Astronomy, University of Hawaii at Manoa, Honolulu, HI 96822, USA
  • Po-Yan Tseng Department of Physics and IPAP, Yonsei University, Seoul 03722, Republic of Korea
Keywords: muon g − 2, axion, 2HDM, leptoquark


Data from the Muon \(g − 2\) experiment and measurements of the fine structure constant suggest that the anomalous magnetic moments of the muon and electron are at odds with standard model expectations. We survey the ability of axion-like particles, two-Higgs-doublet models and leptoquarks to explain the discrepancies. We find that accounting for other constraints, all scenarios except the Type-I, Type-II and Type-Y two-Higgs-doublet models fit the data well.
Special Issue on CP Violation as a probe of New Physics beyond Standard Model