Speaker
Martin Hoferichter
Description
Observables that violate lepton flavor symmetry are sensitive probes of physics beyond the Standard Model (BSM), since any observation would be a clear BSM signal. Limits on $\mu\to e$ conversion in nuclei are amongst the most stringent ones available, and are even expected to improve by up to four orders of magnitude at Mu2e and COMET. In this talk, I will discuss, based on an effective-field-theory analysis, how the spin-dependent process already implies indirect limits on lepton-flavor-violating decays of light pseudoscalars that surpass direct limits by orders of magnitude. I will also comment on the nuclear-structure input required for a robust interpretation of $\mu\to e$ conversion limits.
