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 ωc/2π~=141 GHz and e- values also at ωc/2π~=164 GHz. Here we do extract from these data a new figure of merit for violation of CPT symmetry similar to \|mKaon-mAntikaon\|/mKaon<~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.
Physical Review Letters
- Pub Date:
- December 1999
- High Energy Physics - Phenomenology
- Improved content, Editorially approved for publication in PRL, LATEX file, 5 pages, no figures, 16k