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T: Fachverband Teilchenphysik

T 43: Hauptvorträge

T 43.3: Hauptvortrag

Dienstag, 1. März 2016, 09:50–10:30, VMP4 Audimax 1

Low energy precision experiments with muons — •Niklaus Berger — Institute for Nuclear Physics and PRISMA Cluster of Excellence, JGU Mainz

Many of the most stringent tests of the Standard Model of particle physics are performed in low energy experiments involving muons. One of them is the measurement of the anomalous magnetic moment of the muon, where a 3.5 σ discrepancy between theory and measurement is seen. A new, improved experiment at Fermilab will start taking data soon. A second experiment employing an innovative cold muon beam is planned at J-PARC in Japan.

Another area is the search for charged lepton flavour violation, where the existing limits already strongly constrain models for physics beyond the standard model and a variety of new experiments is in the planning and construction phase. The MEG experiment at PSI searches for the decay µ → e γ and just underwent a major upgrade. Several experiments are planned to search for the conversion of a muon to an electron in the field of a nucleus. At PSI, a new experiment to search for the decay µ → eee is being designed.

The talk will report the current status of precision muon experiments and give an outlook on the upcoming measurements and the exciting new experimental technologies involved.