Search for the FCNC charmonium decay J/ψ → D0μ+μ− + c.c.

The BESIII collaboration

doi:10.1007/JHEP04(2025)061

Search for the FCNC charmonium decay J/ψ → D⁰μ⁺μ⁻ + 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
University of Science and Technology of China
Southeast University, Nanjing
Joint Institute for Nuclear Research
Peking University
University of Chinese Academy of Sciences
National Centre for Nuclear Research
Mongolian Academy of Sciences
Carnegie Mellon University
University of Münster
Wuhan University
Lanzhou University
Istinye University
Nankai University
Moscow Institute of Physics and Technology
China University of Geosciences, Wuhan
Soochow University
Henan University
Nanjing University
North China Electric Power University
Tsinghua University
CAS - Institute of Modern Physics
Jilin University
Hunan University
Sun Yat-Sen University
Chung-Ang University
Fudan University
Shandong University
Yunnan University
Helmholtz Institute Mainz
Ruhr University Bochum
University of South China
University of Jinan
Liaoning University
Inner Mongolia University
Henan Normal University
University of Eastern Piedmont
Nanjing Normal University
University of Ferrara
University of Manchester
University of Oxford
GSI Helmholtz Centre for Heavy Ion Research
Guangxi University
Shandong Normal University
Indiana University Bloomington
University of Hawai'i at Mānoa
Suranaree University of Technology
South China Normal University
University of the Punjab
Hangzhou Normal University
Huangshan College
University of Groningen
Indian Institute of Technology Madras
Justus Liebig University Giessen
Qufu Normal University
Liaoning Normal University
Renmin University of China
Hebei University
China Center of Advanced Science and Technology World Laboratory
Sichuan University
Guangxi Normal University
Shanxi University
Central China Normal University
Henan University of Science and Technology
Henan University of Technology
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
Swiss Federal Institute of Technology Lausanne
Shanghai Jiao Tong University
Ministry of Education of the People's Republic of China
Near East University
Beihang University
Yantai University
University of Bristol
Shanxi Normal University
University of Science and Technology Liaoning

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

7 Scopus citations

Abstract

Based on a data sample of (10087 ± 44) × 10⁶J/ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J/ψ → D⁰μ⁺μ⁻ + c.c. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be ℬ(J/ψ → D⁰μ⁺μ⁻ + c.c.) < 1.1 × 10⁻⁷ at the 90% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state.

Original language	Danish
Article number	61
Journal	Journal of High Energy Physics
Volume	2025
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2025)061
State	Published - Apr 2025

Keywords

Flavour Changing Neutral Currents
Quarkonium
Rare Decay
e-e Experiments

Access to Document

10.1007/JHEP04(2025)061

Cite this

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title = "Search for the FCNC charmonium decay J/ψ → D0μ+μ− + c.c.",

abstract = "Based on a data sample of (10087 ± 44) {\texttimes} 106J/ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J/ψ → D0μ+μ− + c.c. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be ℬ(J/ψ → D0μ+μ− + c.c.) < 1.1 {\texttimes} 10−7 at the 90\% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state.",

keywords = "Flavour Changing Neutral Currents, Quarkonium, Rare Decay, e-e Experiments",

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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doi = "10.1007/JHEP04(2025)061",

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AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ai, X. C.

AU - Kabana, S.

AU - The BESIII collaboration

N1 - Publisher Copyright: © The Author(s) 2025.

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N2 - Based on a data sample of (10087 ± 44) × 106J/ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J/ψ → D0μ+μ− + c.c. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be ℬ(J/ψ → D0μ+μ− + c.c.) < 1.1 × 10−7 at the 90% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state.

AB - Based on a data sample of (10087 ± 44) × 106J/ψ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay J/ψ → D0μ+μ− + c.c. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be ℬ(J/ψ → D0μ+μ− + c.c.) < 1.1 × 10−7 at the 90% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state.

KW - Flavour Changing Neutral Currents

KW - Quarkonium

KW - Rare Decay

KW - e-e Experiments

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DO - 10.1007/JHEP04(2025)061

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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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