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arXiv · hep-ph/9209217

Vacuum Polarization and the Electric Charge of the Positron

B. Mueller·M. H. Thoma
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Abstract

We show that higher-order vacuum polarization would contribute a measureable net charge to atoms, if the charges of electrons and positrons do not balance precisely. We obtain the limit $|Q_e+Q_{\bar e}| < 10^{-18} e$ for the sum of the charges of electron and positron. This also constitutes a new bound on certain violations of PCT invariance.

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B. Mueller, M. H. Thoma. 1992-11-10. Vacuum Polarization and the Electric Charge of the Positron. https://doi.org/10.1103/physrevlett.69.3432

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