FPD Seminar
The Mu3e experiment – from concepts to construction
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America/Los_Angeles
Zoom-only
Zoom-only
Description
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Abstract:
It is well-established that lepton flavour is not conserved in nature. But so far, only neutrinos have been observed to mix. So, what about the charged leptons? Is their flavour conserved in nature or not?
The muon is our most sensitive probe to this question. Different lepton flavour violating channels are investigated with fantastic precision. The Mu3e experiment at the Paul-Scherrer-Institut (PSI), in particular, focusses on the decay $\mu^+\rightarrow e^+e^-e^+$ and aims to reach a final sensitivity for its branching ratio down to $10^{-16}$ -- that is 4 orders of magnitude smaller than the current best limit set by the SINDRUM experiment in the late 1980s. The experiment will be conducted in two phases: in Phase~I, the beamline present at PSI, which delivers up to $10^8\,\mu/\mathrm{s}$, allows for a single event sensitivity down to $2 \times 10^{-15}$. For the ultimate sensitivity in Phase~II a new beamline will be necessary.
To reach the experimental goals a detector system is required that provides excellent momentum, vertex and time resolution.
An unprecedentedly thin silicon pixel tracking detector will be constructed using novel sensor technologies and services.
It is complemented by scintillating fibres and tiles which add an even more precise time information to the tracks.
The full detector will be placed inside a solenoidal magnetic field of 1\,T.
Prototypes of all detector systems are currently under construction and in preparation for a first integration run inside the magnet early next year.
Exciting times are ahead of us!