Precise measurement of the branching fractions of J/ψ → Λ ¯ π+ ς-+ c. c. and J/ψ → Λ ¯ π- ς++ c. c.

The BESIII collaboration

doi:10.1103/PhysRevD.108.112012

Precise measurement of the branching fractions of J/ψ → Λ ¯ π+ ς-+ c. c. and J/ψ → Λ ¯ π- ς++ c. c.

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
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
Lanzhou University
Qufu Normal University
Beijing Institute of Petrochemical Technology
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
IBA
University of Perugia
Universidad de Tarapacá
Petersburg Nuclear Physics Institute (PNPI)
Hunan Normal University
Shanxi Normal University
Near East University
North China Electric Power 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

8 Scopus citations

Abstract

Based on a data sample of (10087±44)×106 J/ψ events collected with the BESIII detector, the branching fraction of J/ψ→Λ¯π+ς-+c.c. is measured to be (1.221±0.002±0.038)×10-3, and the branching fraction of its isospin partner mode J/ψ→Λ¯π-ς++c.c. is measured to be (1.244±0.002±0.045)×10-3 with improved precision. Here the first uncertainties are statistical and the second ones systematic. The isospin symmetry of the ς baryon in charmonium hadronic decay and the "12% rule"are tested, and no violation is found. The potential of using these channels as ς baryon sources for nuclear physics research is studied, and the momentum and angular distributions of these sources are provided.

Original language	English
Article number	112012
Journal	Physical Review D
Volume	108
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.108.112012
State	Published - 1 Dec 2023

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10.1103/PhysRevD.108.112012

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title = "Precise measurement of the branching fractions of J/ψ → Λ ¯ π+ ς-+ c. c. and J/ψ → Λ ¯ π- ς++ c. c.",

abstract = "Based on a data sample of (10087±44)×106 J/ψ events collected with the BESIII detector, the branching fraction of J/ψ→Λ¯π+ς-+c.c. is measured to be (1.221±0.002±0.038)×10-3, and the branching fraction of its isospin partner mode J/ψ→Λ¯π-ς++c.c. is measured to be (1.244±0.002±0.045)×10-3 with improved precision. Here the first uncertainties are statistical and the second ones systematic. The isospin symmetry of the ς baryon in charmonium hadronic decay and the {"}12\% rule{"}are tested, and no violation is found. The potential of using these channels as ς baryon sources for nuclear physics research is studied, and the momentum and angular distributions of these sources are provided.",

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

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2023",

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doi = "10.1103/PhysRevD.108.112012",

language = "English",

volume = "108",

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T1 - Precise measurement of the branching fractions of J/ψ → Λ ¯ π+ ς-+ c. c. and J/ψ → Λ ¯ π- ς++ c. c.

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ai, X. C.

AU - Kabana, S.

AU - The BESIII collaboration

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2023/12/1

Y1 - 2023/12/1

N2 - Based on a data sample of (10087±44)×106 J/ψ events collected with the BESIII detector, the branching fraction of J/ψ→Λ¯π+ς-+c.c. is measured to be (1.221±0.002±0.038)×10-3, and the branching fraction of its isospin partner mode J/ψ→Λ¯π-ς++c.c. is measured to be (1.244±0.002±0.045)×10-3 with improved precision. Here the first uncertainties are statistical and the second ones systematic. The isospin symmetry of the ς baryon in charmonium hadronic decay and the "12% rule"are tested, and no violation is found. The potential of using these channels as ς baryon sources for nuclear physics research is studied, and the momentum and angular distributions of these sources are provided.

AB - Based on a data sample of (10087±44)×106 J/ψ events collected with the BESIII detector, the branching fraction of J/ψ→Λ¯π+ς-+c.c. is measured to be (1.221±0.002±0.038)×10-3, and the branching fraction of its isospin partner mode J/ψ→Λ¯π-ς++c.c. is measured to be (1.244±0.002±0.045)×10-3 with improved precision. Here the first uncertainties are statistical and the second ones systematic. The isospin symmetry of the ς baryon in charmonium hadronic decay and the "12% rule"are tested, and no violation is found. The potential of using these channels as ς baryon sources for nuclear physics research is studied, and the momentum and angular distributions of these sources are provided.

UR - https://www.scopus.com/pages/publications/85182219364

U2 - 10.1103/PhysRevD.108.112012

DO - 10.1103/PhysRevD.108.112012

M3 - Article

AN - SCOPUS:85182219364

SN - 2470-0010

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112012

ER -

Precise measurement of the branching fractions of J/ψ → Λ ¯ π+ ς-+ c. c. and J/ψ → Λ ¯ π- ς++ c. c.

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