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Search for the rare semi-leptonic decay J/ψ → D−e+νe + c.c.
作者机构：Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Beijing Institute of Petrochemical Technology Beijing102617 China Bochum Ruhr-University BochumD-44780 Germany Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China China Center of Advanced Science and Technology Beijing100190 China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200443 China Novosibirsk630090 Russia GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Sezione di Perugia PerugiaI-06100 Italy University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Ave. 54B Ulaanbaatar13330 Mongolia Jilin University Changchun130012 China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Moscow region Dubna141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany Lanzhou University Lanzhou730000 China Liaoning Normal University Dalian116029 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China North China Electric Power University Beijing102206 China Peking University Beijing100871 China Qufu Normal University Qufu273165 China Shandong Normal University Jinan250014 China Shandong University Jinan250100 China Shanghai Jiao Tong University Shanghai200240 China Shanxi Normal University Linfen041004 China Shanxi University Taiyuan030006 China Sichuan University Chengdu610064 China Soochow University Suzhou215006 China South China Normal University Guangzhou510006 China Southeast University Nanjing211100 China State Key Laboratory of Particle Detection and Electronics Hefei Beijing100049 230026 China Sun Yat-Sen University Guangzhou510275 China Suranaree University of Technology University Avenue 111 Nakhon Ratchasima30000 Thailand Tsinghua University Beijing100084 China Turkish Accelerator Center Particle Factory Group Istanbul Bilgi University Eyup Istanbul34060 Turkey Near East University North Cyprus Mersin 10 Nicosia Turkey University of Chinese Academy of Sciences Beijing100049 China University of Groningen GroningenNL-9747 AA Netherlands University of Hawaii HonoluluHI96822 United States University of Jinan Jinan250022 China University of Manchester Oxford Road ManchesterM13 9PL United Kingdom University of Minnesota MinneapolisMN55455 United States University of Muenster Wilhelm-Klemm-Str. 9 Muenster48149 Germany University of Oxford Keble Rd OxfordOX13RH United Kingdom University of Science and Technology Liaoning Anshan114051 China University of Science and Technology of China Hefei230026 China University of South China Hengyang421001 China University of the Punjab Lahore54590 Pakistan University of Turin and INFN University of Turin TurinI-10125 Italy University of Eastern Piedmont AlessandriaI-15121 Italy INFN TurinI-10125 Italy Uppsala University Box 516 UppsalaSE-75120 Sweden Wuhan University Wuhan430072 China Xinyang Normal University Xinyang464000 China Zhejiang University Hangzhou310027 China Zhengzhou University Zhengzhou450001 China Bogazici University Istanbul34342 Turkey The Moscow Institute of Physics and Technology Moscow141700 Russia The Novosibirsk State University Novosibirsk630090 Russia The NRC "Kurchatov Institute" PNPI Gatchina188300 Russia Istanbul Arel University Istanbul34295 Turkey Goethe University Frankfurt Frankfurt am Main60323 Germany Key Laboratory for Particle Physics Astrophysics and Cosmology Ministry of Education Shanghai Key Laboratory for Particle Physics and Cosmology Institute of Nuclear and Particle Physics Shanghai200240 China Institute of Modern Physics Fudan University Shanghai200443 China Harvard University Department of Physics CambridgeMA02138 United States State Key Laboratory of Nuclear Physics and Technology Peking University Beijing100871 China School of Physics and Electronics Hunan University Changsha410082 China Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum Matter South China Normal University Guangzhou510006 China Frontier Science Center for Rare Isotopes Lanzhou University Lanzhou730000 China Lanzhou Center for Theoretical Physics Lanzhou University Lanzhou730000 China
出 版 物：《arXiv》 (arXiv)
年 卷 期：2021年
核心收录：
摘 要：Using 10.1 × 109 J/ψ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy √s = 3.097 GeV and collected with the BESIII detector, we present a search for the rare semi-leptonic decay J/ψ → D−e+νe + c.c. No excess of signal above background is observed, and an upper limit on the branching fraction B(J/ψ → D−e+νe + c.c.) −8 is obtained at 90% confidence level. This is an improvement of more than two orders of magnitude over the previous best limit. Copyright © 2021, The Authors. All rights reserved.
