Work

Toponium effects on quantum steering and Bell nonlocality of top quarks

Year: 2026

Type: article

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 $10σ$. For Bell nonlocality, the statistical significance can also be high close to threshold, reaching about $9σ$, although the feasibility of such a measurement will depend crucially on the control of systematic uncertainties.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/bqy7-c34z

Authors: J. A. Aguilar-Saavedra, S. Rodríguez-Benítez

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Agencia Estatal de Investigación

Awards: G1175115578, G2262748287, G282847690, G300979063, G34346518, G3480869486, G425668148, G4526231891, G5080475149, G5650853359, G6496269175, G7084143925

OpenAlex ID: W7166800465

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