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Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}. / BESIII Collaboration ; Мучной, Николай Юрьевич.

In: Physical Review Letters, Vol. 130, No. 21, 26.05.2023, p. 211901.

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

Harvard

BESIII Collaboration & Мучной, НЮ 2023, 'Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}', Physical Review Letters, vol. 130, no. 21, pp. 211901. https://doi.org/10.1103/PhysRevLett.130.211901

APA

BESIII Collaboration, & Мучной, Н. Ю. (2023). Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}. Physical Review Letters, 130(21), 211901. https://doi.org/10.1103/PhysRevLett.130.211901

Vancouver

BESIII Collaboration, Мучной НЮ. Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}. Physical Review Letters. 2023 May 26;130(21):211901. doi: 10.1103/PhysRevLett.130.211901

Author

BESIII Collaboration ; Мучной, Николай Юрьевич. / Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}. In: Physical Review Letters. 2023 ; Vol. 130, No. 21. pp. 211901.

BibTeX

@article{7c0ae7c6801a401b88797beb376c5891,
title = "Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}",
abstract = "Using (10 087±44)×10^{6} J/ψ events collected with the BESIII detector, the radiative hyperon decay Σ^{+}→pγ is studied at an electron-positron collider experiment for the first time. The absolute branching fraction is measured to be (0.996±0.021_{stat}±0.018_{syst})×10^{-3}, which is lower than its world average value by 4.2 standard deviations. Its decay asymmetry parameter is determined to be -0.652±0.056_{stat}±0.020_{syst}. The branching fraction and decay asymmetry parameter are the most precise to date, and the accuracies are improved by 78% and 34%, respectively.",
author = "{BESIII Collaboration} and Achasov, {M N} and Chen, {S J} and Nikolaev, {I B} and Мучной, {Николай Юрьевич}",
note = "Precision Measurement of the Decay Σ+→pγ in the Process J/ψ→Σ+Σ¯− / BESIII Collaboration // Physical Review Letters. – 2023. – Vol. 130, No. 21. – P. 211901. – DOI 10.1103/physrevlett.130.211901.",
year = "2023",
month = may,
day = "26",
doi = "10.1103/PhysRevLett.130.211901",
language = "English",
volume = "130",
pages = "211901",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

RIS

TY - JOUR

T1 - Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}

AU - BESIII Collaboration

AU - Achasov, M N

AU - Chen, S J

AU - Nikolaev, I B

AU - Мучной, Николай Юрьевич

N1 - Precision Measurement of the Decay Σ+→pγ in the Process J/ψ→Σ+Σ¯− / BESIII Collaboration // Physical Review Letters. – 2023. – Vol. 130, No. 21. – P. 211901. – DOI 10.1103/physrevlett.130.211901.

PY - 2023/5/26

Y1 - 2023/5/26

N2 - Using (10 087±44)×10^{6} J/ψ events collected with the BESIII detector, the radiative hyperon decay Σ^{+}→pγ is studied at an electron-positron collider experiment for the first time. The absolute branching fraction is measured to be (0.996±0.021_{stat}±0.018_{syst})×10^{-3}, which is lower than its world average value by 4.2 standard deviations. Its decay asymmetry parameter is determined to be -0.652±0.056_{stat}±0.020_{syst}. The branching fraction and decay asymmetry parameter are the most precise to date, and the accuracies are improved by 78% and 34%, respectively.

AB - Using (10 087±44)×10^{6} J/ψ events collected with the BESIII detector, the radiative hyperon decay Σ^{+}→pγ is studied at an electron-positron collider experiment for the first time. The absolute branching fraction is measured to be (0.996±0.021_{stat}±0.018_{syst})×10^{-3}, which is lower than its world average value by 4.2 standard deviations. Its decay asymmetry parameter is determined to be -0.652±0.056_{stat}±0.020_{syst}. The branching fraction and decay asymmetry parameter are the most precise to date, and the accuracies are improved by 78% and 34%, respectively.

UR - https://pubmed.ncbi.nlm.nih.gov/37295102/

UR - https://www.elibrary.ru/item.asp?id=61463737

U2 - 10.1103/PhysRevLett.130.211901

DO - 10.1103/PhysRevLett.130.211901

M3 - Article

C2 - 37295102

VL - 130

SP - 211901

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

ER -

ID: 68339671