Work

Bell tests for collider decay processes

Year: 2026

Type: preprint

Abstract: We propose Bell tests for collider decays using independently sampled analysis axes as settings and detector regions to assign binary or null outcomes. We show that a Bell violation requires postselection, opening a loophole. However, under measurement independence and operational equivalence of acceptance events across settings, any local model exploiting the loophole must be nonclassical in the sense of measurement contextuality. We derive a Bell inequality violated by singlet correlations when the effective spin-analyzing powers are sufficiently high. Its violation then witnesses Bell nonlocality or measurement contextuality.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.09294

Authors: Fucci, Danilo M., Orthey, Alexandre C., Jr., Barr, Alan J., Timpson, Christopher G.

Institutions: University of Oxford, University of Warsaw, Universidade Estadual Paulista (Unesp)

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7212125140

Cites: 1

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Related to: 10