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 P. Adlarson and O. Afedulidis and X. c. Ai and R. Aliberti and A. Amoroso and Q. An and Y. Bai and O. Bakina and I. Balossino and Y. Ban and H.-R. Bao and V. Batozskaya and K. Begzsuren and N. Berger and M. Berlowski and M. Bertani and D. Bettoni and F. Bianchi and E. Bianco and A. Bortone and R. a. Briere and A. Brueggemann 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 - Adlarson, P.

AU - Afedulidis, O.

AU - Ai, X. c.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, Q.

AU - Bai, Y.

AU - Bakina, O.

AU - Balossino, I.

AU - Ban, Y.

AU - Bao, H.-R.

AU - Batozskaya, V.

AU - Begzsuren, K.

AU - Berger, N.

AU - Berlowski, M.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bianco, E.

AU - Bortone, A.

AU - Briere, R. a.

AU - Brueggemann, A.

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/

U2 - 10.1103/PhysRevLett.133.101902

DO - 10.1103/PhysRevLett.133.101902

M3 - Article

C2 - 39303247

VL - 133

SP - 101902

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 10

M1 - 101902

ER -

ID: 62704000