The ACME Collaboration has made the most sensitive measurement of the electric dipole moment of the electron. This moment is of great interest because the Standard Model predicts it should be too small to measure, supersymmetric and other model predict it should be small but measurable, and not nearly enough CP violation has been discovered to account for how a universe could survive the big...
W. Heil, F. Allmendinger, O. Grasdijk, K. Jungmann, H.-J. Krause, A. Offenhäusser, M. Repetto,U. Schmidt, L. Willmann, S. Zimmer
(MIXed collaboration)
a Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany
b Physikalisches Institut, Ruprecht-Karls-Universität, 69120 Heidelberg, Germany
c University of Groningen, The Netherlands
d Peter Grünberg Institut (PGI-8),...
This talk will cover the latest results on the permanent electric dipole moment (EDM) of neutral $^{199}$Hg atoms. The EDM is manifested as a small perturbation to the Larmor precession frequency due to the interaction energy of the electric dipole with a static electric field. The atoms are prepared in four separate glass vapor cells using optical pumping with resonant 254 nm laser light and...
Electric Dipole Moments (EDMs) of elementary particles are important candidates
for CP violation and hence possible sources for the observed matter-antimatter
asymmetry in the universe. The Jülich Electric Dipole Moment Investigation
(JEDI) collaboration is searching for EDMs of light nuclei. Ideally this would
be done in a designated storage ring using the frozen spin concept. Such a ring...
Searches for electric dipole moments (EDM) of fundamental particles are considered one of the most sensitive approaches to physics beyond the Standard Model of particle physics (SM). A non-SM mechanism violating the combined symmetry of charge conjugation and parity inversion (CP-violation) could help to explain the observed baryon asymmetry of the Universe while manifesting itself as electric...
A nonzero electric dipole moment (EDM) of the neutron, proton, deuteron
or helion, in fact, of any finite system necessarily involves the breaking of a symmetry,
either by the presence of external fields (i.e., electric fields leading to the case of
induced EDMs) or
explicitly by the breaking of the discrete parity and time-reflection symmetries in the
case of permanent EDMs.
Recent...
