Standard

Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons. / The BESIII Collaboration ; Николаев, Иван Борисович; Ачасов, Михаил Николаевич и др.

в: Physical Review Letters, Том 133, № 10, 101902, 04.09.2024, стр. 101902.

Результаты исследований: Научные публикации в периодических изданиях › статья

Harvard

The BESIII Collaboration, Николаев, ИБ, Ачасов, МН & Мучной, НЮ 2024, 'Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons', Physical Review Letters, Том. 133, № 10, 101902, стр. 101902. https://doi.org/10.1103/PhysRevLett.133.101902

APA

The BESIII Collaboration, Николаев, И. Б., Ачасов, М. Н., & Мучной, Н. Ю. (2024). Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons. Physical Review Letters, 133(10), 101902. [101902]. https://doi.org/10.1103/PhysRevLett.133.101902

Vancouver

The BESIII Collaboration, Николаев ИБ, Ачасов МН, Мучной НЮ. Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons. Physical Review Letters. 2024 сент. 4;133(10):101902. 101902. doi: 10.1103/PhysRevLett.133.101902

Author

The BESIII Collaboration ; Николаев, Иван Борисович ; Ачасов, Михаил Николаевич и др. / Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons. в: Physical Review Letters. 2024 ; Том 133, № 10. стр. 101902.

BibTeX

@article{a8f7d60be725473e9727475c19ac3628,
title = "Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons",
abstract = "The J/ψ, ψ(3686)→ς0ς¯0 processes and subsequent decays are studied using the world's largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays ς0→Λγ and ς¯0→Λ¯γ, ας0=-0.0017±0.0021±0.0018 and α¯ς0=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the ς0 hyperons for the first time by measuring the asymmetry ACPς=ας0+α¯ς0=(0.4±2.9±1.3)×10-3. The weak CP test is performed in the subsequent decays of their daughter particles Λ and Λ¯. Also for the first time, the transverse polarizations of the ς0 hyperons in J/ψ and ψ(3686) decays are observed with opposite directions, and the ratios between the S-wave and D-wave contributions of the J/ψ, ψ(3686)→ς0ς¯0 decays are obtained. These results are crucial to understand the decay dynamics of the charmonium states and the production mechanism of the ς0-ς¯0 pairs. ",
author = "{BESIII Collaboration} and M. Ablikim and Николаев, {Иван Борисович} and Ачасов, {Михаил Николаевич} and Мучной, {Николай Юрьевич}",
year = "2024",
month = sep,
day = "4",
doi = "10.1103/PhysRevLett.133.101902",
language = "English",
volume = "133",
pages = "101902",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "10",

}

RIS

TY - JOUR

T1 - Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Николаев, Иван Борисович

AU - Ачасов, Михаил Николаевич

AU - Мучной, Николай Юрьевич

PY - 2024/9/4

Y1 - 2024/9/4

N2 - The J/ψ, ψ(3686)→ς0ς¯0 processes and subsequent decays are studied using the world's largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays ς0→Λγ and ς¯0→Λ¯γ, ας0=-0.0017±0.0021±0.0018 and α¯ς0=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the ς0 hyperons for the first time by measuring the asymmetry ACPς=ας0+α¯ς0=(0.4±2.9±1.3)×10-3. The weak CP test is performed in the subsequent decays of their daughter particles Λ and Λ¯. Also for the first time, the transverse polarizations of the ς0 hyperons in J/ψ and ψ(3686) decays are observed with opposite directions, and the ratios between the S-wave and D-wave contributions of the J/ψ, ψ(3686)→ς0ς¯0 decays are obtained. These results are crucial to understand the decay dynamics of the charmonium states and the production mechanism of the ς0-ς¯0 pairs.

AB - The J/ψ, ψ(3686)→ς0ς¯0 processes and subsequent decays are studied using the world's largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays ς0→Λγ and ς¯0→Λ¯γ, ας0=-0.0017±0.0021±0.0018 and α¯ς0=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the ς0 hyperons for the first time by measuring the asymmetry ACPς=ας0+α¯ς0=(0.4±2.9±1.3)×10-3. The weak CP test is performed in the subsequent decays of their daughter particles Λ and Λ¯. Also for the first time, the transverse polarizations of the ς0 hyperons in J/ψ and ψ(3686) decays are observed with opposite directions, and the ratios between the S-wave and D-wave contributions of the J/ψ, ψ(3686)→ς0ς¯0 decays are obtained. These results are crucial to understand the decay dynamics of the charmonium states and the production mechanism of the ς0-ς¯0 pairs.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85204513183&origin=inward&txGid=ef93ab330d130d8a8dee51566f541d68

UR - https://pubmed.ncbi.nlm.nih.gov/39303247/

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U2 - 10.1103/PhysRevLett.133.101902

DO - 10.1103/PhysRevLett.133.101902

M3 - Article

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VL - 133

SP - 101902

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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M1 - 101902

ER -

ID: 62704000