Search for the lepton-flavour violating decay
$\mu^+ \to e^+ e^+ e^-$
The Mu3e experiment is a new search for the lepton-flavour violating decay of a positive muon into two positrons and one electron. See here for a an overview of the experiment.
Current news
Installation of Scintillating Fibre Detector
Mu3e has installed the scintllating fibre detector for the 2026 beamtime, for the first time mounting this complete detector around the beam line. The scintillating fibres give sub-nanosecond time resolution with a minimum material budget.
Installation of Vertex Detector
Mu3e has installed the vertex detector for the 2026 beamtime, marking an important milestone in the detector assembly.
Poster Prize for Thomas Schwartze at the CFLV Conference
Thomas Schwartze has won the experimental poster price at the Charged Lepton Flavour Violation conference 2026 for his poster on the vertex fit for Mu3e using the generalized triplet track fit.
Collaboration Server
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