SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 43: Fundamental Symmetries II
HK 43.2: Gruppenbericht
Mittwoch, 22. März 2023, 16:15–16:45, SCH/A252
Status of the COMET experiment — •Andreas Jansen, Thomas Kormoll, Dominik Stöckinger, and Kai Zuber — TU Dresden, Institut für Kern- und Teilchenphysik, Germany
The COMET experiment, currently being built in Tokai, Japan, will search for the coherent neutrinoless transition of muons to electrons in the Coulomb field of atomic nuclei (µ−+N→ e−+N). While the total lepton number L is conserved, with no out-going neutrinos the individual lepton flavors Le and Lµ are violated by one unit.
This charged lepton flavor violation involving muons is one of the most promising Beyond Standard Model (BSM) fields currently under investigation. Not only do recent results regarding the muon anomalous magnetic moment (g-2) present a very strong motivation for muon BSM, but also current best experimental limits barely fall short of the predicted conversion rate in many widely acknowledged BSM theories (e.g. supersymmetric theories).
In order to realize stringent requirements on the detector system and muon beam, the COMET experiment will follow a staged approach. Phase-I aims to improve the current branching ratio limit of 7× 10−13 by two orders of magnitude while also allowing data taking of beam dynamics and validation of Monte Carlo simulations. In Phase-II the branching ratio limit will be additionally improved by at least two orders of magnitude.
This talk will give an experimental overview of both phases, recent updates on the facility and the current detector development status.