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Testing CPT and Lorentz Symmetry with Electrons and Positrons in Penning Traps

Robert Bluhm, Alan Kostelecky, Neil Russell

hep-pharXiv:hep-ph/9810287

Abstract

We present a theoretical analysis of signals for CPT and Lorentz violation in g-2 and charge-to-mass-ratio experiments on electrons and positrons in Penning traps. Experiments measuring anomaly frequencies are found to be the most sensitive to CPT violation. We find that the conventional figure of merit for CPT breaking, involving the difference of the electron and positron g factors, is inappropriate in this context, and an alternative is introduced. Bounds of approximately one part in 1020 are attainable.

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