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Bell's inequality tests: from photons to B-mesons

A. Bramon·R. Escribano·G. Garbarino
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Abstract

We analyse the recent claim that a violation of a Bell's inequality has been observed in the $B$--meson system [A. Go, {\em Journal of Modern Optics} {\bf 51} (2004) 991]. The results of this experiment are a convincing proof of quantum entanglement in $B$--meson pairs similar to that shown by polarization entangled photon pairs. However, we conclude that the tested inequality is not a genuine Bell's inequality and thus cannot discriminate between quantum mechanics and local realistic approaches.

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A. Bramon, R. Escribano, G. Garbarino. 2004-10-15. Bell's inequality tests: from photons to B-mesons. https://doi.org/10.1080/09500340500072893

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