Speaker
Description
We study the exotic muon decays with five charged tracks in the final state. First, we investigate the Standard Model rate for $\mu \rightarrow eeeee \nu \nu$ and find that the Mu3e experiment should have tens to hundreds of signal events per $10^{15}$ $\mu^+$ decays, depending on the signal selection strategy. We then turn to a neutrinoless $\mu \rightarrow eeeee$ decay that may arise in new-physics models with lepton-flavor-violating effective operators involving a dark Higgs $h_d$. We show that a $\mu \rightarrow eeeee$ search at the Mu3e experiment, with potential sensitivity to the branching ratio at the ${\mathcal O}(10^{-12})$ level or below, can explore new regions of parameter space and new physics scales as high as $\Lambda \sim 10^{15}$~GeV.
| Are you willing to consider presenting a poster instead? | No |
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