22-29 July 2015
Europe/Vienna timezone

Electric Dipole Moments - A Window for New Physics

Jul 25, 2015, 11:30 AM


talk Flavour Physics and Fundamental Symmetries Flavour Physics and Fundamental Symmetries


Hans Stroeher (Forschungszentrum Juelich GmbH)


Permanent Electric Dipole Moments (EDM) of non-degenerate systems, e.g., leptons (electron, muon, tau) and hadrons (neutron, proton), provide a unique opportunity to search for physics beyond the Standard Model (BSM). Since EDMs violate P-, T-, and (via CPT) CP-symmetry they may also provide a solution to one of the biggest puzzles of contemporary physics and cosmology, i.e., the apparent matter-antimatter asymmetry of the Universe. EDMs are very small - in fact the SM predictions (electroweak CP violation) are beyond experimental reach with current techniques. Up to now, very stringent limits have been determined directly only the neutron and indirectly (from bound systems) for the electron and the proton. A recent idea to directly investigate EDMs of the proton and light ions (deuteron and 3He) in storage rings has the potential to improve the sensitivity significantly - at the same time, they will be required to elucidate the EDM source - once a finite EDM will be observed. The talk will give a brief overview of the status and future perspectives of the experimental EDM activities worldwide.

Primary author

Hans Stroeher (Forschungszentrum Juelich GmbH)

Presentation materials