Abstract
Permanent electric dipole moments (EDMs) violate parity and time-reversal symmetry. Within the Standard Model (SM) they are many orders of magnitude below present experimental sensitivity. Many extensions of the SM predict much larger EDMs, which are therefore an excellent probe for the existence of “new physics”. Until recently it was believed that only electrically neutral systems could be used for sensitive searches of EDMs. With the introduction of a novel experimental method, high precision for charged systems will be within reach as well. The features of this method and its possibilities are discussed.
Highlights
The baryon asymmetry predicted from the SM and the Cosmological Standard Model falls short of the observed one by as much as ten order of magnitude
Several experimental methods that circumvent these problems make use of the motional electric field a fast moving particle experiences when traversing a magnetic field [17,18,19,20]. These methods provide direct access to the very interesting realm of light nuclei, which so far have not been examined for electric dipole moments (EDMs)
A charged particle with magnetic moment anomaly a and EDM η moving in an electromagnetic field will exhibit spin precession
Summary
The symmetry properties of fundamental processes and particles are a strong guide to understand the underlying interactions. The baryon asymmetry predicted from the SM and the Cosmological Standard Model falls short of the observed one by as much as ten order of magnitude This suggests the presence of additional sources of CP-violation beyond those incorporated in the SM. Several experimental methods that circumvent these problems make use of the motional electric field a fast moving particle experiences when traversing a magnetic field [17,18,19,20] These methods provide direct access to the very interesting realm of light nuclei, which so far have not been examined for EDMs. the muon can be probed sensitively, offering the unique possibility to explore the flavor structure of fundamental particles
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