Past Electron-Positron g-2 Experiments Yielded Sharpest Bound on CPT Violation for Point Particles

In our experiments on a single e^- and e⁺ we measured the cyclotron and spin-cyclotron difference frequencies ω_c^± and ω_a^± = ω_s^±-ω_c^± and ratios a^± = ω_a^±/ω_c^± at ω_c/2π≃141GHz and e^- values also at ω_c/2π≃164GHz. Here we do extract from these data a new figure of merit for violation of CPT symmetry similar to |m_Kaon-m_Antikaon|/m_Kaon≲10^-18 for the K mesons composed of two quarks. That expression compares experimental relativistic mass energies of particle states before and after the C,P,T operations have transformed particle into antiparticle. The figure for our noncomposite leptons was even smaller: |ħ(ω_a^-/2)-ħ(ω_a⁺/2)|/m₀c²≲12×10^-22.