Work

Search for D 0 → K − η e + ν e , D + → K S 0 η e + ν e and D + → η η e + ν e decays

Year: 2024
Type: article
Abstract: By analyzing e + e − annihilation data corresponding to an integrated luminosity of 7.93 fb − 1 , collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we search for the semileptonic decays D 0 → K − η e + ν e , D + → K S 0 η e + ν e and D + → η η e + ν e for the first time. We present evidence for D 0 → K − η e + ν e with a significance of 3.3 σ . The branching fraction of D 0 → K − η e + ν e is measured to be ( 0.8 4 − 0.34 + 0.29 ± 0.22 ) × 10 − 4 . No significant signals are observed for the decays D + → K S 0 η e + ν e and D + → η η e + ν e and we set the upper limits on their branching fractions. Published by the American Physical Society 2024
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Institutions: Institute of High Energy Physics, Siberian Branch of the Russian Academy of Sciences, Budker Institute of Nuclear Physics, Uppsala University, Ruhr University Bochum, Zhengzhou University, Johannes Gutenberg University Mainz, Istituto Nazionale di Fisica Nucleare, University of Turin, University of Science and Technology of China, Southeast University, Joint Institute for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, Peking University, University of Chinese Academy of Sciences, National Centre for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Carnegie Mellon University, University of Münster, Wuhan University, Istinye University, Nankai University, China University of Geosciences, Soochow University, Henan University, North China Electric Power University, Nanjing University, Tsinghua University, Institute of Modern Physics, Jilin University, Hunan University, Chung-Ang University, Shandong University, Yunnan University, Helmholtz Institute Mainz, University of South China, University of Jinan, Liaoning University, Sun Yat-sen University, Università degli Studi del Piemonte Orientale “Amedeo Avogadro”, Nanjing Normal University, University of Ferrara, University of Manchester, University of Oxford, GSI Helmholtz Centre for Heavy Ion Research, Guangxi University, Shandong Normal University, Fudan University, Indiana University, Henan Normal University, University of Hawaiʻi at Mānoa, University of Hawaii System, Suranaree University of Technology, South China Normal University, University of the Punjab, Liaoning Normal University, Hangzhou Normal University, Huangshan University, University of Tarapacá, University of Groningen, Justus-Liebig-Universität Gießen, Qufu Normal University, Renmin University of China, Lanzhou University, Hebei University, 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, COMSATS University Islamabad, University of Perugia, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Hunan Normal University, China Center of Advanced Science and Technology, Shanghai Jiao Tong University, Near East University, Beihang University, Inner Mongolia University, Yantai University, Shanxi Normal University, University of Science and Technology Liaoning
Language: Latvian
Open Access status: hybrid
OpenAlex ID: W4404920640
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