Regular Article - Theoretical Physics
Charged lepton flavor violation in light of muon
Department of Physics, National Taiwan University, 10617, Taipei, Taiwan
Accepted: 13 December 2021
Published online: 24 December 2021
The recent confirmation of the muon anomaly by the Fermilab experiment may harbinger a new era in and physics. In the context of general two Higgs doublet model, the discrepancy can be explained via one-loop exchange of sub-TeV exotic scalar and pseudoscalars, namely H and A, that have flavor changing neutral couplings and at times the usual tau Yukawa coupling, . Taking , we show that the above solution to muon then predicts enhanced rates of various charged lepton flavor violating processes, which should be accessible at upcoming experiments. We cover muon related processes such as , and , and decays and . A similar one-loop diagram with induces , bringing the rate right into the sensitivity of the MEG II experiment. The dipole can be probed further by and . With its promised sensitivity range and ability to use different nuclei, the conversion experiments can not only make discovery, but access the extra diagonal quark Yukawa couplings . For the lepton, we find that would probe down to or lower, while would probe to .
© The Author(s) 2021
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