Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Fundamental Symmetries II

HK 19.1: Group Report

Tuesday, March 31, 2020, 17:00–17:30, J-HS B

Status of the COMET experiment — •Andreas Jansen, Thomas Kormoll, Dominik Stöckinger, and Kai Zuber — TU Dresden, Institut für Kern- und Teilchenphysik, Germany

COMET is an experiment at the Japan Proton Accelerator Research Complex (J-PARC), which will search for coherent neutrinoless transition of muons to electrons in the coulomb field of atomic nuclei (µ⁻+N→ e⁻+N). Since this process violates charged lepton flavor conservation it is highly suppressed in the Standard Model and thus provides a promising channel to constrain new physics.

The COMET experiment will operate in two stages. Phase-I is currently under construction at J-PARC and is aiming at two orders of magnitude improvement over the current limit. In Phase-II this will be additionally improved by at least two orders of magnitude. Refinements on the experimental design based on ongoing investigations and experience gained from Phase-I will be used to push this even further for a total improvement of five orders of magnitude.

This talk will give an overview of both phases, along with recent updates about the facility and the current status of detector developments.