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La physique de l’infiniment grand l’infiniment petit

03/05/2021 : The Mu3e Experiment : A new search for muon -> eee

29 avril 2021

par Prof. Andre Schoening (Heidelberg U) se déroulera le lundi 3 mai 2021 à 14h.

Séminaire commun avec le LPNHE


The lepton flavor violating (LFV) decay muon -> eee is highly suppressed in the Standard Model (SM) to an unobservable level. The observation of this LFV decay would be a clear signal of physics beyond the SM. The Mu3e collaboration aims to improve the experimental sensitivity by several orders of magnitudes with respect to the existing bound B(muon -> eee)<1E-12 (90% CL) obtained by the SINDRUM experiment in the year 1988.
After motivating the searches for lepton flavor violation, I will introduce the novel detector concept and discuss the technologies chosen for instrumentation. Emphasis will be given to the main tracking device, an all-pixel tracking detector which is based on High Voltage Monolithic Active Pixel Sensors (HV-MAPS) and exploits an ultra-light design with a radiation length of only 1 per mill per tracking layer.
Finally, the status of the experiment and the planned 2021 integration run will be presented.

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