Measurements of the absolute branching fractions of Ω− decays and test of the ΔI=1/2 rule

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Measurements of the absolute branching fractions of Ω− decays and test of the ΔI=1/2 rule. / BESIII Collaboration ; Мучной, Николай Юрьевич ; Николаев, Иван Борисович.

In: Physical Review D, Vol. 108, No. 9, 091101, 21.11.2023.

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

BibTeX

@article{992e7bc075b14b80b74e3d440ec4e932,

title = "Measurements of the absolute branching fractions of Ω− decays and test of the ΔI=1/2 rule",

abstract = "Based on a dataset of (27.12±0.10)×108 ψ(3686) events collected at the BESIII experiment, the absolute branching fractions of the three dominant ω- decays are measured to be Bω-→Ξ0π-=(25.03±0.44±0.53)%, Bω-→Ξ-π0=(8.43±0.52±0.28)%, and Bω-→ΛK-=(66.3±0.8±2.0)%, where the first and second uncertainties are statistical and systematic, respectively. The ratio between Bω-→Ξ0π- and Bω-→Ξ-π0 is determined to be 2.97±0.19±0.11, which is in good agreement with the PDG value of 2.74±0.15, but greater by more than four standard deviations than the theoretical prediction of 2 obtained from the ΔI=1/2 rule.",

author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",

note = "Measurements of the absolute branching fractions of Ω− decays and test of the ΔI=1/2 rule / BESIII Collaboration // Physical Review D. – 2023. – Vol. 108, No. 9. – P. L091101. – DOI 10.1103/physrevd.108.l091101. ",

year = "2023",

month = nov,

day = "21",

doi = "10.1103/PhysRevD.108.L091101",

language = "English",

volume = "108",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "9",

}

RIS

TY - JOUR

T1 - Measurements of the absolute branching fractions of Ω− decays and test of the ΔI=1/2 rule

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Measurements of the absolute branching fractions of Ω− decays and test of the ΔI=1/2 rule / BESIII Collaboration // Physical Review D. – 2023. – Vol. 108, No. 9. – P. L091101. – DOI 10.1103/physrevd.108.l091101.

PY - 2023/11/21

Y1 - 2023/11/21

N2 - Based on a dataset of (27.12±0.10)×108 ψ(3686) events collected at the BESIII experiment, the absolute branching fractions of the three dominant ω- decays are measured to be Bω-→Ξ0π-=(25.03±0.44±0.53)%, Bω-→Ξ-π0=(8.43±0.52±0.28)%, and Bω-→ΛK-=(66.3±0.8±2.0)%, where the first and second uncertainties are statistical and systematic, respectively. The ratio between Bω-→Ξ0π- and Bω-→Ξ-π0 is determined to be 2.97±0.19±0.11, which is in good agreement with the PDG value of 2.74±0.15, but greater by more than four standard deviations than the theoretical prediction of 2 obtained from the ΔI=1/2 rule.

AB - Based on a dataset of (27.12±0.10)×108 ψ(3686) events collected at the BESIII experiment, the absolute branching fractions of the three dominant ω- decays are measured to be Bω-→Ξ0π-=(25.03±0.44±0.53)%, Bω-→Ξ-π0=(8.43±0.52±0.28)%, and Bω-→ΛK-=(66.3±0.8±2.0)%, where the first and second uncertainties are statistical and systematic, respectively. The ratio between Bω-→Ξ0π- and Bω-→Ξ-π0 is determined to be 2.97±0.19±0.11, which is in good agreement with the PDG value of 2.74±0.15, but greater by more than four standard deviations than the theoretical prediction of 2 obtained from the ΔI=1/2 rule.

UR - https://www.elibrary.ru/item.asp?id=64524618

UR - https://www.mendeley.com/catalogue/a164f5fe-bfe3-3896-a45a-fc49c93798e3/

U2 - 10.1103/PhysRevD.108.L091101

DO - 10.1103/PhysRevD.108.L091101

M3 - Article

VL - 108

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 9

M1 - 091101

ER -

ID: 68349657