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, Мучной, НЮ & Николаев, ИБ 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., Мучной, Н. Ю., & Николаев, И. Б. (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, Мучной НЮ, Николаев ИБ. 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 Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",
note = "The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts nos 2020YFA0406300 and 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts nos 12175244, 12275058, 12235008, 12475087, 11875115, 11875262, 11635010, 11735014, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509 and 12235017; the Chinese Academy of Sciences (CAS) LargeScale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contract no. U1832207; CAS Key Research Program of Frontier Sciences under Contracts nos. QYZDJ-SSW-SLH003 and QYZDJSSW-SLH040; 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract no. 758462; European Union{\textquoteright}s Horizon 2020 research and innovation program under Marie SklodowskaCurie grant agreement under Contract no. 894790; German Research Foundation DFG under Contracts nos 443159800 and 455635585, Collaborative Research Center CRC 1044, FOR5327, GRK 2149; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract no. DPT2006K-120470; National Research Foundation of Korea under Contract no. NRF-2022R1A2C1092335; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation of Thailand under Contract No. B16F640076; Polish National Science Center under Contract no. 2019/35/O/ST2/02907; The Swedish Research Council; U. S. Department of Energy under Contract no. DE-FG02-05ER41374.",
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 - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts nos 2020YFA0406300 and 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts nos 12175244, 12275058, 12235008, 12475087, 11875115, 11875262, 11635010, 11735014, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509 and 12235017; the Chinese Academy of Sciences (CAS) LargeScale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contract no. U1832207; CAS Key Research Program of Frontier Sciences under Contracts nos. QYZDJ-SSW-SLH003 and QYZDJSSW-SLH040; 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract no. 758462; European Union’s Horizon 2020 research and innovation program under Marie SklodowskaCurie grant agreement under Contract no. 894790; German Research Foundation DFG under Contracts nos 443159800 and 455635585, Collaborative Research Center CRC 1044, FOR5327, GRK 2149; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract no. DPT2006K-120470; National Research Foundation of Korea under Contract no. NRF-2022R1A2C1092335; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation of Thailand under Contract No. B16F640076; Polish National Science Center under Contract no. 2019/35/O/ST2/02907; The Swedish Research Council; U. S. Department of Energy under Contract no. DE-FG02-05ER41374.

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://www.scopus.com/pages/publications/105009269882

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

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