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Bell nonlocality and entanglement in e+e−→YY¯ at BESIII

Published:2024-09-11 Issue:5 Volume:110 Page:
ISSN:2470-0010
Container-title:Physical Review D
language:en
Short-container-title:Phys. Rev. D

Author:

Wu Sihao¹,Qian Chen²^ORCID,Wang Qun¹³^ORCID,Zhou Xiao-Rong¹

Affiliation:

1. University of Science and Technology of China

2. Beijing Academy of Quantum Information Sciences

3. Anhui University of Science and Technology

Abstract

The Bell nonlocality and entanglement are two kinds of quantum correlations in quantum systems. Due to the recent upgrade in the Beijing Spectrometer III (BESIII) experiment, it is possible to explore the nonlocality and entanglement in hyperon-antihyperon systems produced in electron-positron annihilation with high precision data. We provide a systematic method for studying quantum correlations in spin-1/2 hyperon-antihyperon systems through the measures for the nonlocality and entanglement. We find that with nonvanishing polarizations of the hyperon and its antihyperon, the kinematic region of nonlocality in the hyperon-antihyperon system is more restricted than the τ+τ− system in which polarizations of τ leptons are vanishing. We also present an experimental proposal to probe the nonlocality and entanglement in hyperon-antihyperon systems at BSEIII.

Published by the American Physical Society

2024

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Chinese Academy of Sciences

Publisher

American Physical Society (APS)

Link

http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.110.054012/fulltext

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