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Understanding Bell locality tests at colliders
J. A. Aguilar-Saavedra, J. A. Casas, J. M. Moreno·March 19, 2026
hep-phhep-exQuantum Physics
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Abstract
For decades, it has been known that local hidden variable theories cannot be disproved by collider experiments involving decaying particles. However, if these theories satisfy a small set of mild assumptions, they become testable. In particular, they can be disproved using Bell-like inequalities for $μ^+ μ^-$ and $τ^+ τ^-$ pairs.