Evidence for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ψ</mml:mi><mml:mo>′</mml:mo></mml:math>Decays into<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi><mml:mi>η</mml:mi></mml:math>
C. Geng(University of Science and Technology of China), H. S. Chen, N. Berger(Johannes Gutenberg University Mainz), F. Feldbauer, I. Boyko(Joint Institute for Nuclear Research), S. J. Chen(Nanjing University), J. P. Dai(Yunnan University), Y. Ban(Peking University), M. L. Chen, Ruirui Fan(Chinese Academy of Sciences), J. C. Chen, Y. B. Chen, M. Destefanis, J. M. Bian, R. A. Briere(Carnegie Mellon University), G. Chen, Y. Chen, L. Y. Dong(Centers for Disease Control and Prevention), S. X. Du(Zhengzhou University), J. Fang(Yunnan University), Zhenghua An(Chinese Academy of Sciences), X. X. Cao(Institute of High Energy Physics), Mai-Ying Duan(Shanxi University), G. F. Cao(Institute of High Energy Physics), Z. Y. Deng, M. Bertani(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), J. A. Becker(Ruhr University Bochum), Y. Gao, L. An, I. Denysenko, D. Dedovich(Joint Institute for Nuclear Research), J. F. Chang(Nankai University), Y. Ding(Liaoning University), Y. P. Chu, H. P. Cheng, V. Bytev, M. N. Achasov(Siberian Branch of the Russian Academy of Sciences), S. S. Fang, R. Baldini(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), G. Chelkov(Joint Institute for Nuclear Research), J. Z. Bai, D. Cronin-Hennessy, C. Q. Feng, J. Fu, Q. An(University of Science and Technology of China), M. Y. Dong, C. D. Fu(Institute of High Energy Physics)
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