• The muon $g−2$ in two-Higgs-doublet models

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    • Keywords


      Muon $g−2$; two-Higgs-doublet models.

    • Abstract


      Updating various theoretical and experimental constraints on the four different types of two-Higgsdoublet models (2HDMs), we find that only the ‘lepton-specific’ (or ‘type-X’) 2HDM can explain the present muon $g−2$ anomaly in the parameter region of large tan $\beta$, a light CP-odd boson, and heavier CP-even and charged bosons which are almost degenerate. Severe constraints on the models come mainly from the consideration of vacuum stability and perturbativity, the electroweak precision data, the b-quark observables like $B_{S}\rightarrow \mu\mu$, the precision measurements of the lepton universality as well as the 125 GeV boson property observed at the LHC.

    • Author Affiliations



      1. Korea Institute for Advanced Study, 85 Hoegiro, Seoul 130-722, Korea
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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