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arXiv · 2606.30768

Toponium effects on quantum steering and Bell nonlocality of top quarks

J. A. Aguilar-Saavedra·S. Rodríguez-Benítez
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Abstract

We investigate quantum steering and Bell nonlocality in top-quark pair production at the LHC near threshold. The toponium contribution strengthens the spin-singlet component and substantially enhances the entanglement between the two quark spins. With current LHC data, quantum steering appears observable with a statistical significance around $10\sigma$. For Bell nonlocality, the statistical significance can also be high close to threshold, reaching about $9\sigma$, although the feasibility of such a measurement will depend crucially on the control of systematic uncertainties.

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J. A. Aguilar-Saavedra, S. Rodríguez-Benítez. 2026-06-29. Toponium effects on quantum steering and Bell nonlocality of top quarks. https://arxiv.org/abs/2606.30768

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