Investigation of the Δi=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ- Decays

The BESIII collaboration

doi:10.1103/PhysRevLett.132.101801

Investigation of the Δi=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ- Decays

The BESIII collaboration

Institute of Higher Research

CAS - Institute of High Energy Physics
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
Uppsala University
Zhengzhou University
Chinese Academy of Sciences
Johannes Gutenberg University Mainz
University of Turin
National Institute for Nuclear Physics
Liaoning Normal University
University of Science and Technology of China
Southeast University, Nanjing
Joint Institute for Nuclear Research
Peking University
National Centre for Nuclear Research
Mongolian Academy of Sciences
Carnegie Mellon University
University of Münster
Wuhan University
University of Chinese Academy of Sciences
Istinye University
Xinyang Normal University
Nankai University
Moscow Institute of Physics and Technology
Soochow University
Nanjing University
North China Electric Power University
Tsinghua University
CAS - Institute of Modern Physics
Jilin University
Hunan University
Chung-Ang University
Ruhr University Bochum
Shandong University
Yunnan University
Helmholtz Institute Mainz
University of Jinan
Liaoning University
University of Eastern Piedmont
Sun Yat-Sen University
University of Oxford
University of Ferrara
University of Manchester
GSI Helmholtz Centre for Heavy Ion Research
Guangxi University
Henan University of Technology
Nanjing Normal University
Shandong Normal University
Fudan University
Henan Normal University
University of Hawai'i at Mānoa
Suranaree University of Technology
South China Normal University
University of the Punjab
Indiana University Bloomington
Hangzhou Normal University
Huangshan College
University of Groningen
China University of Geosciences, Wuhan
Justus Liebig University Giessen
Indian Institute of Technology Madras
Qufu Normal University
Beijing Institute of Petrochemical Technology
Lanzhou University
Sichuan University
Guangxi Normal University
Shanxi University
Central China Normal University
Henan University of Science and Technology
University of South China
Central South University
Zhejiang University
Goethe University Frankfurt
COMSATS University Islamabad
The Department of Mathematical Sciences
University of Perugia
Universidad de Tarapacá
Petersburg Nuclear Physics Institute (PNPI)
Hunan Normal University
Shanxi Normal University
Near East University
Hebei University
University of Science and Technology Liaoning
Inner Mongolia University
Yantai University
Shanghai Jiao Tong University
Ministry of Education of the People's Republic of China
China Center of Advanced Science and Technology World Laboratory
Beihang University
Henan University

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

14 Scopus citations

Abstract

Using (10087±44)×106 J/ψ events collected with the BESIII detector, numerous Ξ- and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ-Ξ¯+→Λ(pπ-)π-Λ¯(n¯π0)π+ and its charge-conjugate channel. The precisions of αΛ0 for Λ→nπ0 and α¯Λ0 for Λ¯→n¯π0 compared to world averages are improved by factors of 4 and 1.7, respectively.

Original language	English
Article number	101801
Journal	Physical Review Letters
Volume	132
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.132.101801
State	Published - 8 Mar 2024

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10.1103/PhysRevLett.132.101801

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title = "Investigation of the Δi=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ- Decays",

abstract = "Using (10087±44)×106 J/ψ events collected with the BESIII detector, numerous Ξ- and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ-Ξ¯+→Λ(pπ-)π-Λ¯(n¯π0)π+ and its charge-conjugate channel. The precisions of αΛ0 for Λ→nπ0 and α¯Λ0 for Λ¯→n¯π0 compared to world averages are improved by factors of 4 and 1.7, respectively.",

author = "M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and Ai, \{X. C.\} and S. Kabana and \{The BESIII collaboration\}",

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T1 - Investigation of the Δi=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ- Decays

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ai, X. C.

AU - Kabana, S.

AU - The BESIII collaboration

PY - 2024/3/8

Y1 - 2024/3/8

N2 - Using (10087±44)×106 J/ψ events collected with the BESIII detector, numerous Ξ- and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ-Ξ¯+→Λ(pπ-)π-Λ¯(n¯π0)π+ and its charge-conjugate channel. The precisions of αΛ0 for Λ→nπ0 and α¯Λ0 for Λ¯→n¯π0 compared to world averages are improved by factors of 4 and 1.7, respectively.

AB - Using (10087±44)×106 J/ψ events collected with the BESIII detector, numerous Ξ- and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ-Ξ¯+→Λ(pπ-)π-Λ¯(n¯π0)π+ and its charge-conjugate channel. The precisions of αΛ0 for Λ→nπ0 and α¯Λ0 for Λ¯→n¯π0 compared to world averages are improved by factors of 4 and 1.7, respectively.

UR - https://www.scopus.com/pages/publications/85187192701

U2 - 10.1103/PhysRevLett.132.101801

DO - 10.1103/PhysRevLett.132.101801

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SN - 0031-9007

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 101801

ER -

Investigation of the Δi=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ- Decays

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