The collider tests of a leptophilic scalar for the anomalous magnetic moments
Abstract
We study the anomalous muon and electron magnetic moments by introducing a scalar with CP-violating Yukawa couplings to the lepton sector. By fitting these two magnetic moments with the recent experimental measurements, we find that such a leptophilic scalar in the mass range of O(10)- O(1000 )\, GeV can be a possible source for the current experimental deviations from the Standard Model (SM) predictions, with O(0.1) - O(1) Yukawa couplings. The current electron and muon EDM constraints to the general CP-violating Yukawa couplings are discussed. We propose to search such a leptophilic scalar mediated at the future high-luminosity LHC (HL-LHC) runs, as well as the high-energy lepton colliders, including the CEPC and the muon collider. Our results show that the leptophilic scalar in the mass range of O(10)- O(1000 )\, GeV can be fully probed by the future experimental searches at the HL-LHC and the lepton colliders at their early stages.
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