PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T08 Flavour Physics and CP Violation
Observation of the post-tagging effect for entangled K mesons at KLOE
A. Di Domenico*  on behalf of the KLOE-2 Collaboration
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Pre-published on: January 29, 2024
Published on: March 21, 2024
Novel quantum phenomena have been recently discussed in association to a peculiar time correlation between entangled neutral kaons produced at a $\phi$-factory: the past state of the first decayed kaon, when it was still entangled before its decay, is post-tagged by the result and the time of the future observation on the other kaon decay. This surprising ``from future to past'' effect is fully observable. Preliminary results obtained on the analysis of data collected by the KLOE experiment at the DA$\Phi$NE collider are presented, showing experimental evidence of this new effect.
DOI: https://doi.org/10.22323/1.449.0371
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