Speaker
Mr
Marvin Schnubel
(Johannes Gutenberg-University Mainz)
Description
Axionlike Particles (ALPs) appear in many well-motivated extensions of the Standard Model. Their lepton-flavor violating couplings can be probed in exotic muon and tau decays. When ALPs are produced resonantly, the sensitivity of three-body decays such as $\mu\to3e$ and $\tau\to3\mu$ exceeds that of radiative decays like $\mu\to e\gamma$ and $\tau\to\mu\gamma$ by multiple orders of magnitude. The opposite is true for regions, where resonant ALP-production is not possible, therefore searches for both processes are highly complementary. We discuss constraints from various types of experiments on ALPs with a single dominant lepton-flavour violating coupling and loop-induced photon coupling. We also take constraints from non-decay experiments such as muonium-antimuonium oscillations, electron EDM, and $(g-2)_\mu$ into account.
Keywords: Axionlike Particles, Lepton-Flavor Violation, Muon Decays, Tau Decays
Primary author
Mr
Marvin Schnubel
(Johannes Gutenberg-University Mainz)
