Speaker
Description
One of the most striking mysteries in our visible universe is the origin of the large asymmetry between matter and antimatter which our standard model, despite the observed charge-parity (CP) violation, seems to be unable to explain. At MPIK we are currently developing the Lepton Symmetry (LSym) experiment. There, we will store a single positron and an electron in a deep-cryogenic Penning trap. Our double-trap system allows determining the spin states of both particles non-destructively and unambiguously in a magnetic bottle, while the extremely homogeneous magnetic field in our so-called cavity trap supports unperturbed precision measurements. After cooling to the ground state of motion, we compare the g-factor, mass and charge with orders of magnitude higher precision than previously possible in order to probe matter-antimatter (charge-parity-time, CPT) symmetry.
