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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Fundamental Symmetries

HK 20.1: Gruppenbericht

Mittwoch, 1. September 2021, 16:30–17:00, H4

Probing charged lepton flavor violation with the Mu2e experiment — •Stefan E. Müller, Anna Ferrari, Oliver Knodel, and Reuven Rachamin for the Mu2e collaboration — Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany

The Mu2e experiment, currently under construction at the Fermi National Accelerator Laboratory near Chicago, will search for the neutrinoless conversion of muons to electrons in the field of an aluminum nucleus. In the Standard Model, this process, which violates charged lepton flavor conservation, is highly suppressed and undetectable. However, scenarios for physics beyond the Standard Model predict small but observable rates. The Mu2e experiment aims for a sensitivity which is four orders of magnitude better than previous experiments. This is achieved by rigorous control of all backgrounds that could mimic the monoenergetic conversion electron signal.

At the Helmholtz-Zentrum Dresden-Rossendorf, we use the ELBE radiation facility to study the performance of the detectors that will monitor the rate of stopped muons in the aluminum target. For these detectors we have ported several software analysis algorithms to FPGA hardware using High-Level Synthesis, which will be tested at the next ELBE beamtime. Additionally, we perform extensive Monte Carlo simulations for shielding studies and rate comparisons.

In the presentation, the design and status of the Mu2e experiment and its detectors will be presented, and results from ELBE beamtimes and the simulation studies will be shown.