PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T08: Flavour Physics and CP Violation
Tests of CPT symmetry and quantum coherence with entangled neutral kaons at KLOE
R. D'Amico*  on behalf of the KLOE-2 Collaboration
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Pre-published on: January 12, 2022
Published on: May 12, 2022
The entanglement in the neutral kaon pairs observed by the KLOE experiment at the DA$\Phi$NE $\phi$-factory is a unique tool to test discrete symmetries and quantum coherence at the utmost sensitivity, in particular strongly motivating the experimental searches of possible CPT violating effects, which would unambiguously signal New Physics.\newline
We will present the final result of the measurement of the decoherence and CPT violation parameters in $K_S K_L \rightarrow \pi^+ \pi^- \pi^+ \pi^-$ with an improved statistical accuracy of a factor $\sim 2$ with respect to literature.
DOI: https://doi.org/10.22323/1.398.0501
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