Search for $$ {K}_S^0 $$ invisible decays

A bstract Based on (1 . 0087 ± 0 . 0044) × 10 10 J/ψ events collected with the BESIII detector at the BEPCII e + e − storage ring, we search for $$ {K}_S^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> invisible decays via the J/ψ → $$ \phi {K}_S^0{K}_S^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ϕ</mml:mi> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> process. No significant signal is observed, and the upper limit of the branching fraction of these invisible decays is set at 8.4 × 10 − 4 at the 90% confidence level. This is the first experimental search for $$ {K}_S^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> invisible decays.

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Journal
Journal of High Energy Physics
Published
2025-05-09
DOI
https://doi.org/10.1007/jhep05(2025)092
Citations
2
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Particle physics theoretical and experimental studies
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article
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Search for $$ {K}_S^0 $$ invisible decays

A. Dbeyssi, P. T. Ge, Z. W. Ge, C. X. Lin et al.
2 citations
Journal of High Energy Physics
Particle physics theoretical and experimental studies
3.74
article

Search for $$ {K}_S^0 $$ invisible decays

A. Dbeyssi, P. T. Ge, Z. W. Ge, C. X. Lin, Y. H. Wu, T. Chen, J. R. Li, L. M. Zhang, J. Jackson, Z. C. Zhou, A. Kupść, H. Liu, Y. Q. Chen, H. L., R. Wang, Angela B. Brueggemann, A. Amoroso, X. H. Xie, T. T. Han, G. Chelkov, J. K. Jiao, Q. Liu, N. Berger, A. Calcaterra, F. Z. Qi, Z. J. Chen, M. Pelizaeus, X. Y. Shen, Y. Z., T. J. Zhu, A. Guskov, M. L. Chen, H. B. Liu, H. F. Shen, C. Q. Feng, U. Wiedner, K. Wang, S. Spataro, X. T. Chen, S. Y. Shi, J. Libby, G. Cibinetto, I. Balossino, T. Y. Xing, X. R. Zheng, X. Li, J. H. Zou, J. H. Fang, R. E. de Boer, F. Hanisch, Y. J. Song, S. A. Cetin, J. J. Fan, W. J. Zheng, M. Berlowski, P. C. Hong, H. J. Yang, L. W. Wang, Y. L. Wang, C. J. Xu, J. S. Zhang, S. Janchiv, Y. Zhang, F. Li, I. Uman, Y. C. Xu, H. Zhang, B. A. Shi, F. C., S. Pacetti, S. J. Chen, K. J. Ren, C. D. Fu, M. Y. Dong, W. D. Niu, F. Feldbauer, Yuling Zhai, X. Q. Hao, L. Fava, G. Y. Hou, Y. X. Zhao, Y. R. Hou, Z. L. Wang, Z. Y. Deng, G. Zhao, Weiwei Zhu, H. J. Li, Yi Jin, I. Denysenko, P. Egorov, C. X. Liu, J. J. Zhang, Y. H. Meng, G. Y. Xiao, X. D. Yu, C. Herold, C. Y. Guan, G. R. Liao, K. Schoenning, Z. K. Jia, Z. D. Zhang, T. J. Wang, Y. Z. Zhou, D. Jiang, B. Ding, L. G. Shao, Y. S. Huang, P. C. Jiang, Y. Raghu Reddy, F. De Mori, Z. T. Sun, Y. J. Wu, A. Pathak, J. S. Li, J. Y. Shi, X. J. Wang, Y. Y. Peng, M. Shao, H. Y. Zhang, H. S. Chen, A. Q. Guo, Z. Y. Li, J. L. Zhang, Tianming Ma, W. Ji, Y. T. Feng, X. C. Lou, T. J. Jiang, J. G. Messchendorp, J. X. Zhang, C. Liu, T. Holtmann, S. Sosio, Y. Xie, Y. T. Zhang, V. Thoren, J. Muskalla, K. Begzsuren, S. Kabana, Zhuo Zhang, Ziqi Sun, H. N. Li, J. Gutiérrez, J. P. Wang, K. R. Guruprasad, X. Y., S. B. Liu, W. P. Wang, K. Y. Liu, X. Y. Zhang, G. F. Cao, R. Aliberti, L. Q. Huang, J. Zu, L. C. Liu, S. N. Ruan, Yingjie Tian, Y. X. Yang, X. Y. Zhou, F. Cossio, F. A. Harris, B. X. Zhang, X. Z. Li, T. Liu, H. Q. Zhang, K. X. Huang, J. W. Zhang, H. Xiao, W. K. Liu, A. Q. Zhang, Y. Y. Ji, Q. Zhao, N. Salone, L. Y. 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article en
2 citations

Abstract

A bstract Based on (1 . 0087 ± 0 . 0044) × 10 10 J/ψ events collected with the BESIII detector at the BEPCII e + e − storage ring, we search for $$ {K}_S^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> invisible decays via the J/ψ → $$ \phi {K}_S^0{K}_S^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ϕ</mml:mi> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> process. No significant signal is observed, and the upper limit of the branching fraction of these invisible decays is set at 8.4 × 10 − 4 at the 90% confidence level. This is the first experimental search for $$ {K}_S^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> invisible decays.

Journal of High Energy PhysicsVol. 2025(5)
Goethe University Frankfurt (DE), University of Science and Technology Liaoning (CN), Liaoning University (CN), Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT), Uppsala University (SE), University of Science and Technology of China (CN), University of Hawaii System (US), Central South University (CN), Guangxi University (CN), Nanjing Normal University (CN), Liaoning Normal University (CN), North China Electric Power University (CN), Moscow Institute of Physics and Technology (RU), Shandong University (CN), COMSATS University Islamabad (PK), Hangzhou Normal University (CN), Hunan University (CN), Henan University of Science and Technology (CN), University of Groningen (NL), GSI Helmholtz Centre for Heavy Ion Research (DE), University of the Punjab (PK), Hunan Normal University (CN), Henan University (CN), Shanghai Jiao Tong University (CN), Yantai University (CN), University of Tarapacá (CL), South China Normal University (CN), Novosibirsk State University (RU), Yunnan University (CN), Jilin University (CN), Johannes Gutenberg University Mainz (DE), Justus-Liebig-Universität Gießen (DE), University of Ferrara (IT), Qufu Normal University (CN), Peking University (CN), Nankai University (CN), University of Münster (DE), Sichuan University (CN), Indian Institute of Technology Madras (IN), Fudan University (CN), Inner Mongolia University (CN), University of Perugia (IT), Kurchatov Institute (RU), Shandong Normal University (CN), University of Manchester (GB), Guangxi Normal University (CN), China University of Geosciences (CN), Huangshan University (CN), Joint Institute for Nuclear Research (RU), University of Jinan (CN), Henan University of Technology (CN), University of Bristol (GB), Wuhan University (CN), Zhengzhou University (CN), University of Oxford (GB), Central China Normal University (CN), National Centre for Nuclear Research (PL), Institute of Particle Physics (CA), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Helmholtz Institute Mainz (DE), Istinye University (TR), Institute of Modern Physics (CN), Institute of Nuclear and Particle Physics (GR), Jilin Medical University (CN), Shanxi University of Traditional Chinese Medicine (CN), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Piedmont University (US), Bristol Robotics Laboratory (GB), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), Hebei University (CN), Budker Institute of Nuclear Physics (RU), École Polytechnique Fédérale de Lausanne (CH), China Center of Advanced Science and Technology (CN), University of Turin (IT), Indiana University (US), Chung-Ang University (KR), Near East University (CY), Carnegie Mellon University (US), Henan Normal University (CN), Zhejiang University (CN), Lanzhou University (CN), Renmin University of China (CN), Suranaree University of Technology (TH), Beihang University (CN), Nanjing University (CN), Ruhr University Bochum (DE), University of South China (CN), Shanxi Normal University (CN), Tsinghua University (CN)
U.S. Department of Energy, University of the Punjab, Nanjing Normal University, Yantai University, Shandong University, Strong, Qufu Normal University, University of Oxford, University of Bristol, National Research Foundation, Deutsche Forschungsgemeinschaft, Rijksuniversiteit Groningen, Swedish Foundation for International Cooperation in Research and Higher Education, National Natural Science Foundation of China, Chinese Academy of Sciences, Sun Yat-sen University, South China Normal University, National Research Foundation of Korea, University of Jinan, Knut och Alice Wallenbergs Stiftelse, Tsinghua University, Renmin University of China, Shanxi University, Suranaree University of Technology, Vetenskapsrådet, Zhengzhou University, Zhejiang University, Sichuan University, Shanghai Jiao Tong University, Nankai University, Università degli Studi del Piemonte Orientale, Università degli Studi di Torino, Wuhan University, Uppsala Universitet, Shanxi Normal University, Soochow University, Yunnan University, Liaoning University, Peking University, Nanjing University, Southeast University, University of South China, University of Science and Technology of China, State Key Laboratory of Particle Detection and Electronics, University of Chinese Academy of Sciences, Istituto Nazionale di Fisica Nucleare, CAS Center for Excellence in Particle Physics, Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of High Energy Physics
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Particle physics theoretical and experimental studies
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