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Bounds on CPT and Lorentz violation from experiments with kaons

Alan Kostelecky
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Abstract

Possible signals for indirect CPT violation arising in experiments with neutral kaons are considered in the context of a general CPT- and Lorentz-violating standard-model extension. Certain CPT observables can depend on the meson momentum and exhibit sidereal variations in time. Any leading-order CPT violation would be controlled by four parameters that can be separately constrained in appropriate experiments. Recent experiments bound certain combinations of these parameters at the level of about $10^{-20}$ GeV.

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Alan Kostelecky. 1999-12-22. Bounds on CPT and Lorentz violation from experiments with kaons. https://arxiv.org/abs/hep-ph/9912456

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