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Predicting outcomes of electric dipole and magnetic moment experiments

ORAL

Abstract

The search for electric dipole moment (EDM) of elementary particles is the focus of intense experimental and theoretical efforts, since it can potentially reveal CP-violating interactions outside the standard model. In several recent papers we derived the equations of spin precession which include new pseudoscalar corrections. The new phenomenological model can potentially help in matching QFT predictions with high precision measurements of both electric and magnetic moments. The pseudoscalar correction is expected to be small, and might become important in hypersensitive experiments, like the measurements of electric dipole moments which are themselves related to pseudoscalar quantities. The model is directly applicable to storage ring experiments and high precision atomic measurements. It also becomes possible to explain why EDMs are so difficult to measure, since this correction term might lead to the effective screening of electric dipole moments. Within the same model, it is possible to explain the discrepancy between experimental and theoretical values of muon magnetic anomaly under assumption that the pseudoscalar correction is the dominant source of this discrepancy.

Publication: arXiv:2012.11751 [hep-ph];<br>arXiv:2101.05064 [hep-ph]; 2021 Phys. Scr. 96 035303;<br>arXiv:2010.14218 [hep-ph]

Presenters

  • Peter Porshnev

Authors

  • Peter Porshnev

  • Vladimir Baryshevsky

    Institute for Nuclear Problems, Belarusian State University, Minsk, Belarus