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Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs. / BESIII Collaboration ; Мучной, Николай Юрьевич; Николаев, Иван Борисович.

In: Physical Review D, Vol. 108, No. 3, 031106, 23.08.2023.

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

Harvard

BESIII Collaboration, Мучной, НЮ & Николаев, ИБ 2023, 'Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs', Physical Review D, vol. 108, no. 3, 031106. https://doi.org/10.1103/PhysRevD.108.L031106

APA

BESIII Collaboration, Мучной, Н. Ю., & Николаев, И. Б. (2023). Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs. Physical Review D, 108(3), [031106]. https://doi.org/10.1103/PhysRevD.108.L031106

Vancouver

BESIII Collaboration, Мучной НЮ, Николаев ИБ. Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs. Physical Review D. 2023 Aug 23;108(3):031106. doi: 10.1103/PhysRevD.108.L031106

Author

BESIII Collaboration ; Мучной, Николай Юрьевич ; Николаев, Иван Борисович. / Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs. In: Physical Review D. 2023 ; Vol. 108, No. 3.

BibTeX

@article{7ec878c35dbe44c7b90e63c86895b281,
title = "Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs",
abstract = "The J/ψ→Ξ0Ξ¯0 process and subsequent decays are investigated using (10087±44)×106 J/ψ events collected at the BESIII experiment. The decay parameters of Ξ0 and Ξ¯0 are simultaneously measured to be αΞ=-0.3750±0.0034±0.0016, α¯Ξ=0.3790±0.0034±0.0021, φΞ=0.0051±0.0096±0.0018 rad, φ¯Ξ=-0.0053±0.0097±0.0019 rad with unprecedented accuracies, where the first and the second uncertainties are statistical and systematic, respectively. The most precise values for CP asymmetry observables of Ξ0 decay are obtained to be ACPΞ=(-5.4±6.5±3.1)×10-3 and ΔφCPΞ=(-0.1±6.9±0.9)×10-3 rad. For the first time, the weak and strong phase differences are determined to be ζP-ζS=(0.0±1.7±0.2)×10-2 rad and δP-δS=(-1.3±1.7±0.4)×10-2 rad, which are the most precise results for any weakly decaying baryon. These results will play important roles in the studies of the CP violations and polarizations for the strange, charmed, and beauty baryons.",
author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",
note = "Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs / BESIII Collaboration // Physical Review D. – 2023. – Vol. 108, No. 3. – P. L031106. – DOI 10.1103/physrevd.108.l031106.",
year = "2023",
month = aug,
day = "23",
doi = "10.1103/PhysRevD.108.L031106",
language = "English",
volume = "108",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Tests of CP symmetry in entangled Ξ0−Ξ¯0 pairs / BESIII Collaboration // Physical Review D. – 2023. – Vol. 108, No. 3. – P. L031106. – DOI 10.1103/physrevd.108.l031106.

PY - 2023/8/23

Y1 - 2023/8/23

N2 - The J/ψ→Ξ0Ξ¯0 process and subsequent decays are investigated using (10087±44)×106 J/ψ events collected at the BESIII experiment. The decay parameters of Ξ0 and Ξ¯0 are simultaneously measured to be αΞ=-0.3750±0.0034±0.0016, α¯Ξ=0.3790±0.0034±0.0021, φΞ=0.0051±0.0096±0.0018 rad, φ¯Ξ=-0.0053±0.0097±0.0019 rad with unprecedented accuracies, where the first and the second uncertainties are statistical and systematic, respectively. The most precise values for CP asymmetry observables of Ξ0 decay are obtained to be ACPΞ=(-5.4±6.5±3.1)×10-3 and ΔφCPΞ=(-0.1±6.9±0.9)×10-3 rad. For the first time, the weak and strong phase differences are determined to be ζP-ζS=(0.0±1.7±0.2)×10-2 rad and δP-δS=(-1.3±1.7±0.4)×10-2 rad, which are the most precise results for any weakly decaying baryon. These results will play important roles in the studies of the CP violations and polarizations for the strange, charmed, and beauty baryons.

AB - The J/ψ→Ξ0Ξ¯0 process and subsequent decays are investigated using (10087±44)×106 J/ψ events collected at the BESIII experiment. The decay parameters of Ξ0 and Ξ¯0 are simultaneously measured to be αΞ=-0.3750±0.0034±0.0016, α¯Ξ=0.3790±0.0034±0.0021, φΞ=0.0051±0.0096±0.0018 rad, φ¯Ξ=-0.0053±0.0097±0.0019 rad with unprecedented accuracies, where the first and the second uncertainties are statistical and systematic, respectively. The most precise values for CP asymmetry observables of Ξ0 decay are obtained to be ACPΞ=(-5.4±6.5±3.1)×10-3 and ΔφCPΞ=(-0.1±6.9±0.9)×10-3 rad. For the first time, the weak and strong phase differences are determined to be ζP-ζS=(0.0±1.7±0.2)×10-2 rad and δP-δS=(-1.3±1.7±0.4)×10-2 rad, which are the most precise results for any weakly decaying baryon. These results will play important roles in the studies of the CP violations and polarizations for the strange, charmed, and beauty baryons.

UR - https://www.elibrary.ru/item.asp?id=62693197

UR - https://www.mendeley.com/catalogue/b7abfe92-b9a1-38c6-b423-7fecfe2977bb/

U2 - 10.1103/PhysRevD.108.L031106

DO - 10.1103/PhysRevD.108.L031106

M3 - Article

VL - 108

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 3

M1 - 031106

ER -

ID: 68346747