Lepton $g-2$ anomalies in general flavour conserving two Higgs doublets models
June 07, 2022
The potential discrepancies between the anomalous magnetic moments of the electron and the muon and their Standard Model expectations are addressed in the context of a class of Two Higgs doublets models with tree level neutral flavour conservation. These ``anomalies'' can be explained in two regimes, either scalar masses $>1.3$ TeV and similar vacuum expectation values of the scalar doublets, or scalar masses $<1$ TeV and a strong hierarchy of vacuum expectation values. The electron anomaly is explained through two loops contributions in both regimes; the muon anomaly is explained through two loops contributions for large scalar masses, and through one loop contributions in the second regime with scalar masses $<1$ TeV.
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