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Strangeness measurements of kaon pairs, CP violation and Bell inequalities

Reinhold A. Bertlmann·Beatrix C. Hiesmayr
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Abstract

The nonlocal property of quantum mechanics can be nicely tested in high energy physics; in particular, the neutral kaon pairs as produced at DA$Φ$NE, Frascati, are very well suited. The analogies of kaons as compared to polarized photons or spin--1/2 particles --the kaonic qubit feature-- are reviewed. However, there are also fundamental differences which occur due to the kaon time evolution and due to internal symmetries; in particular, the violation of CP symmetry is related to the violation of Bell inequalities. Two type of Bell inequalities for kaons are presented, one for the variation of the ``quasi--spin'' and the other for different detection times of the kaon.

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Reinhold A. Bertlmann, Beatrix C. Hiesmayr. 2006-09-25. Strangeness measurements of kaon pairs, CP violation and Bell inequalities. https://arxiv.org/abs/hep-ph/0609251

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