Gießen 2024 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 67: Fundamental Symmetries I

HK 67.3: Vortrag

Donnerstag, 14. März 2024, 16:45–17:00, HBR 19: C 103

Search for Charged Lepton Flavor Violation with the Mu2e experiment at Fermilab — •Anna Ferrari, Stefan E. Müller, Oliver Knodel, and Reuven Rachamin — Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany

The Mu2e experiment, which is currently under construction at the Fermi National Accelerator Laboratory (USA), will search for the charged-lepton flavor violating neutrino-less conversion of negative muons into electrons in the field of an aluminum nucleus. A conversion signal would require physics beyond the Standard Model, and the aim of Mu2e is to reach a single-event sensitivity four order of magnitude better than previous experiments. This can be achieved by a rigorous control of all backgrounds that could mimic the monoenergetic conversion electrons, together with an accurate normalization of the signal events.

At the ELBE facility of the Helmholtz-Zentrum Dresden-Rossendorf the pulsed Bremsstrahlung photon beam played a key role to study the performance of the detector system that will monitor the rate of the stopped muons in the aluminum target. In addition, ELBE photon and neutron secondary beams allowed radiation hardness studies of the electronic components that will equip the Mu2e electromagnetic calorimeter.

The design and current status of the Mu2e experiment will be presented, together with a summary of the ELBE results.

Keywords: Charged Lepton Flavor Violation; Muon-to-electron conversion