New experiment on precise comparison of the anomalous magnetic momenta of relativistic electrons and positrons

At present the anomalous magnetic moment (AMM) of electron and positron is measured to a high precision of ∼5x10-8 in the magnetic traps, wherin single particles were captured with energies of milli-electronvolt range. A significant feature of this experiment is taking measurements in the electron-positron storage ring VEPP-2M at particles energy of E=650 MeV simultaneously for electrons and positrons kept in the identical conditions, optimally matching the task to compare their AMM. The calculated behaviour of the polarization degree while crossing the resonance with different RF field amplitudes is shown. The lay-out of the intra beam scattered particles counters are presented. The spin frequency difference as a function of electrostatic separation is calculated. The results of the electron and positron μ' comparison obtained while being inferior in accuracy, confirms the data published, in spite of the completely different experimental conditions. Combined consideration of both results gives the best up to data verification of the CPT theorem and the relativistic invariance principle