Mainz 2012 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Fundamentale Symmetrien
HK 33.5: Talk
Wednesday, March 21, 2012, 18:00–18:15, P 1
A novel approach to measure the electric dipole moment of 129Xenon — •Florian Kuchler, Wolfhardt Feldmeier, Peter Fierlinger, and Bernd Taubenheim — Excellence Cluster "Universe", Technische Universität München, Boltzmannstr. 2, 85748 Garching
Permanent electric dipole moments (EDM) are promising systems to find new CP violation. The properties of the diamagnetic atom 129-Xe make it a particularly interesting candidate for an EDM search, as it enables new experimental strategies. Although the current experimental limit of dXe<4.0· 10−27 ecm is many orders of magnitude higher than the Standard Model (SM) prediction, theories beyond the SM usually require larger EDMs. Our experiment is based on microscopic hyper-polarized liquid xenon droplets, placed in a low-field NMR setup. Implementation of rotating electric fields enables a conceptually new EDM measurement technique, allowing thorough investigation of systematic effects. Still, a Ramsey-type spin precession experiment with static electric field can be realized at similar sensitivity within the same setup. Employing superconducting pick-up coils and highly sensitive LTc-SQUIDs, a large array of independent measurements can be performed simultaneously with different field configurations. With our novel approach we aim to be sensitive to an EDM of 129-Xe on the order of 10−30 ecm. The talk will give an update on the current status of the xenon EDM experiment.