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CPT violation in entangled B0-B0bar states and the demise of flavour tagging

E. Alvarez·J. Bernabeu·N. E. Mavromatos·M. Nebot·J. Papavassiliou
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Abstract

We discuss the demise of flavour tagging due to the loss of the particle-antiparticle identity of neutral B-mesons in the Einstein-Podolsky-Rosen correlated states. Such a situation occurs in cases where the CPT operator is ill-defined, as happens, for example, in quantum gravity models with induced decoherence in the matter sector. The time evolution of the perturbed B0-B0bar initial state, as produced in B-factories, is sufficient to generate new two-body states. For flavour specific decays at equal times, we discuss two definite tests of the two body entanglement: (i) search for the would-be forbidden B0 B0 and B0bar B0bar states; (ii) deviations from the indistinguishable probability between the permuted states B0bar B0 and B0 B0bar.

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E. Alvarez, J. Bernabeu, N. E. Mavromatos, M. Nebot, J. Papavassiliou. 2004-10-29. CPT violation in entangled B0-B0bar states and the demise of flavour tagging. https://doi.org/10.1016/j.physletb.2004.12.032

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