Physics of Particles and Nuclei

, Volume 45, Issue 1, pp 229–233 | Cite as

Search for electric dipole moments of light ions in storage rings

  • F. Rathmann
  • A. Saleev
  • N. N. Nikolaev
Session 5. Fundamental Symmetries and Spin Physics Beyond the Standard Model


The Standard Model (SM) of Particle Physics is not capable to account for the apparent matterantimatter asymmetry of our Universe. Physics beyond the SM is required and is searched for by (i) employing highest energies (e.g., at LHC), and (ii) striving for ultimate precision and sensitivity (e.g., in the search for electric dipole moments (EDMs)). Permanent EDMs of particles violate both time reversal (T) and parity (P) invariance, and are via the CPT-theorem also CP-violating. Finding an EDM would be a strong indication for physics beyond the SM, and pushing upper limits further provides crucial tests for any corresponding theoretical model, e.g., SUSY. Direct searches of proton and deuteron EDMs bear the potential to reach sensitivities beyond 10−29 e cm. For an all-electric proton storage ring, this goal is pursued by the US-based srEDM collaboration [2], while the newly found Julich-based JEDI collaboration [1] is pursuing an approach using a combined electric-magnetic lattice which shall provide access to the EDMs of protons, deuterons, and 3He ions in the same machine. In addition, JEDI has recently proposed to perform a direct measurement of the proton and/or deuteron EDM at COSY using resonant techniques involving Wien filters.


Electric Dipole Moment Storage Ring Wien Filter Radial Electric Field 199Hg 
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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • F. Rathmann
    • 1
  • A. Saleev
    • 2
  • N. N. Nikolaev
    • 2
  1. 1.Institut für KernphysikForschungszentrum JülichJülichGermany
  2. 2.Landau Institute for Theoretical PhysicsChernogolovka, Moscow oblastRussia

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