Standard

Test of local realism via entangled Λ¯¯¯Λ system. / BESIII Collaboration; Ablikim, M.; Ачасов, Михаил Николаевич et al.

In: Nature Communications, Vol. 16, No. 1, 4948, 28.05.2025.

Research output: Contribution to journal › Article › peer-review

Harvard

BESIII Collaboration, Ablikim, M, Ачасов, МН, Николаев, ИБ & Мучной, НЮ 2025, 'Test of local realism via entangled Λ¯¯¯Λ system', Nature Communications, vol. 16, no. 1, 4948. https://doi.org/10.1038/s41467-025-59498-4

APA

BESIII Collaboration, Ablikim, M., Ачасов, М. Н., Николаев, И. Б., & Мучной, Н. Ю. (2025). Test of local realism via entangled Λ¯¯¯Λ system. Nature Communications, 16(1), [4948]. https://doi.org/10.1038/s41467-025-59498-4

Vancouver

BESIII Collaboration, Ablikim M, Ачасов МН, Николаев ИБ, Мучной НЮ. Test of local realism via entangled Λ¯¯¯Λ system. Nature Communications. 2025 May 28;16(1):4948. doi: 10.1038/s41467-025-59498-4

Author

BESIII Collaboration ; Ablikim, M. ; Ачасов, Михаил Николаевич et al. / Test of local realism via entangled Λ¯¯¯Λ system. In: Nature Communications. 2025 ; Vol. 16, No. 1.

BibTeX

@article{c8a54760381a4599a2ceb45c3736de3f,
title = "Test of local realism via entangled Λ¯¯¯Λ system",
abstract = "The non-locality of quantum correlations is a fundamental feature of quantum theory. The Bell inequality serves as a benchmark for distinguishing between predictions made by quantum theory and local hidden variable theory (LHVT). Recent advancements in photon-entanglement experiments have addressed potential loopholes and have observed significant violations of variants of Bell inequality. However, examples of Bell inequalities violation in high energy physics are scarce. In this study, we utilize (10.087 ± 0.044) × 109 J/ψ events collected with the BES-III detector at the BEPCII collider, performing non-local correlation tests using the entangled hyperon pairs. The massive-entangled Λ¯¯¯Λ systems are formed and decay through strong and weak interactions, respectively. Through measurements of the angular distribution of p¯p in J/ψ → γηc and subsequent ηc→Λ(pπ−)¯¯¯Λ(¯pπ+) cascade decays, a significant violation of LHVT predictions is observed. The exclusion of LHVT is found to be statistically significant at a level exceeding 5.2σ in the testing of three Bell-like inequalities.",
author = "{BESIII Collaboration} and M. Ablikim and Ачасов, {Михаил Николаевич} and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",
year = "2025",
month = may,
day = "28",
doi = "10.1038/s41467-025-59498-4",
language = "English",
volume = "16",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Test of local realism via entangled Λ¯¯¯Λ system

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Ачасов, Михаил Николаевич

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2025/5/28

Y1 - 2025/5/28

N2 - The non-locality of quantum correlations is a fundamental feature of quantum theory. The Bell inequality serves as a benchmark for distinguishing between predictions made by quantum theory and local hidden variable theory (LHVT). Recent advancements in photon-entanglement experiments have addressed potential loopholes and have observed significant violations of variants of Bell inequality. However, examples of Bell inequalities violation in high energy physics are scarce. In this study, we utilize (10.087 ± 0.044) × 109 J/ψ events collected with the BES-III detector at the BEPCII collider, performing non-local correlation tests using the entangled hyperon pairs. The massive-entangled Λ¯¯¯Λ systems are formed and decay through strong and weak interactions, respectively. Through measurements of the angular distribution of p¯p in J/ψ → γηc and subsequent ηc→Λ(pπ−)¯¯¯Λ(¯pπ+) cascade decays, a significant violation of LHVT predictions is observed. The exclusion of LHVT is found to be statistically significant at a level exceeding 5.2σ in the testing of three Bell-like inequalities.

AB - The non-locality of quantum correlations is a fundamental feature of quantum theory. The Bell inequality serves as a benchmark for distinguishing between predictions made by quantum theory and local hidden variable theory (LHVT). Recent advancements in photon-entanglement experiments have addressed potential loopholes and have observed significant violations of variants of Bell inequality. However, examples of Bell inequalities violation in high energy physics are scarce. In this study, we utilize (10.087 ± 0.044) × 109 J/ψ events collected with the BES-III detector at the BEPCII collider, performing non-local correlation tests using the entangled hyperon pairs. The massive-entangled Λ¯¯¯Λ systems are formed and decay through strong and weak interactions, respectively. Through measurements of the angular distribution of p¯p in J/ψ → γηc and subsequent ηc→Λ(pπ−)¯¯¯Λ(¯pπ+) cascade decays, a significant violation of LHVT predictions is observed. The exclusion of LHVT is found to be statistically significant at a level exceeding 5.2σ in the testing of three Bell-like inequalities.

UR - https://pubmed.ncbi.nlm.nih.gov/40436867/

UR - https://www.scopus.com/pages/publications/105009269882

U2 - 10.1038/s41467-025-59498-4

DO - 10.1038/s41467-025-59498-4

M3 - Article

C2 - 40436867

VL - 16

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 4948

ER -

ID: 68260133