Abstract
A non-local field theory that breaks discrete symmetries, including C, P, CP, and CPT, but preserves Lorentz symmetry, is presented. We demonstrate that at one-loop level the masses for particle and antiparticle remain equal due to Lorentz symmetry only. An inequality of masses implies breaking of the Lorentz invariance and non-conservation of the usually conserved charges.
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Dolgov, A.D., Novikov, V.A. CPT, Lorentz invariance, mass differences, and charge non-conservation. Jetp Lett. 95, 594–597 (2012). https://doi.org/10.1134/S0021364012110033
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DOI: https://doi.org/10.1134/S0021364012110033