18 Papers
67 Citations
Z. G. Zhao is an academic researcher from China University of Science and Technology. The author has contributed to research in topics: Omega & Branching fraction. The author has an hindex of 11, co-authored 18 publications. Previous affiliations of Z. G. Zhao include University of Science and Technology of China.
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Papers
Observation of η′ →ωe+e-
M. Ablikim,M. N. Achasov,M. N. Achasov,Xiaocong Ai,O. Albayrak,M. Albrecht,D. J. Ambrose,A. Amoroso,F. F. An,Q. An,J. Z. Bai,R. Baldini Ferroli,Y. Ban,D. W. Bennett,J. V. Bennett,M. Bertani,D. Bettoni,J. M. Bian,F. Bianchi,E. Boger,E. Boger,I. Boyko,R. A. Briere,H. Cai,X. Cai,O. Cakir,O. Cakir,A. Calcaterra,G. F. Cao,Serkant Ali Cetin,J. F. Chang,G. Chelkov,G. Chen,H. S. Chen,H. S. Chen,J. C. Chen,M. L. Chen,Sai-Juan Chen,X. C. Chen,X. R. Chen,Y. B. Chen,H. P. Cheng,X. K. Chu,G. Cibinetto,H. L. Dai,J. P. Dai,A. Dbeyssi,D. Dedovich,Z. Y. Deng,A. Denig,I. Denysenko,M. Destefanis,F. De Mori,Y. Ding,C. Dong,Jianmin Dong,L. Y. Dong,M. Y. Dong,S. X. Du,P. F. Duan,E. E. Eren,J. Z. Fan,J. Fang,S. S. Fang,X. Fang,Yaquan Fang,L. Fava,F. Feldbauer,Giulietto Felici,C. Q. Feng,E. Fioravanti,M. Fritsch,C. D. Fu,Q. Gao,X. Y. Gao,Y. Gao,Z. Gao,I. Garzia,K. Goetzen,W. X. Gong,W. Gradl,M. Greco,M. H. Gu,Y. T. Gu,Y. H. Guan,A. Q. Guo,L. B. Guo,Y. Guo,Y. P. Guo,Z. Haddadi,A. Hafner,S. Han,X. Q. Hao,F. A. Harris,K. L. He,X. Q. He,T. Held,Y. K. Heng,Z. L. Hou,C. Hu,H. M. Hu,J. F. Hu,T. Hu,Yi-Ming Hu,G. M. Huang,Guangshun Huang,J. S. Huang,X. T. Huang,Y. Huang,T. Hussain,Q. P. Ji,Q. P. Ji,X. B. Ji,X. L. Ji,L. W. Jiang,X. S. Jiang,X. Y. Jiang,J. B. Jiao,Z. Jiao,D. P. Jin,S. Jin,T. Johansson,A. Julin,N. Kalantar-Nayestanaki,X. L. Kang,X. S. Kang,M. Kavatsyuk,Bibo Ke,P. Kiese,R. Kliemt,B. Kloss,O. B. Kolcu,O. B. Kolcu,B. Kopf,M. Kornicer,W. Kühn,Andrzej Kupsc,J. S. Lange,M. Lara,P. Larin,C. Leng,Cui Li,Cheng Li,D. M. Li,F. Y. Li,F. Y. Li,G. Li,H. B. Li,J. C. Li,Jin Li,K. Li,Lei Li,P. R. Li,Tao Li,W. D. Li,Wei Li,X. L. Li,X. M. Li,X. N. Li,X. Q. Li,Z. B. Li,H. Liang,Y. F. Liang,Y. T. Liang,G. R. Liao,D. X. Lin,Brent J. Liu,C. X. Liu,Fu-Hu Liu,Fang Liu,Feng Liu,H. B. Liu,Huihui Liu,Haiwen Liu,J. Liu,J. B. Liu,J. P. Liu,Jie Liu,Kai Liu,K. Y. Liu,L. D. Liu,P. L. Liu,Q. Liu,S. B. Liu,X. Liu,Y. B. Liu,Z. A. Liu,Zhiqing Liu,H. Loehner,X. C. Lou,X. C. Lou,H. J. Lu,J. G. Lu,Y. P. Lu,Y. P. Lu,C. L. Luo,M. X. Luo,T. Luo,X. L. Luo,Xiao-Rui Lyu,F. C. Ma,H. L. Ma,L. L. Ma,Q. M. Ma,T. Ma,X. N. Ma,X. Y. Ma,F. E. Maas,M. Maggiora,Y. J. Mao,Z. P. Mao,S. Marcello,J. G. Messchendorp,J. Min,R. E. Mitchell,X. H. Mo,Y. J. Mo,C. Morales Morales,K. Moriya,N. Yu. Muchnoi,N. Yu. Muchnoi,H. Muramatsu,Y. Nefedov,F. Nerling,I. B. Nikolaev,I. B. Nikolaev,Z. Ning,S. Nisar,S. L. Niu,X. Y. Niu,S. L. Olsen,Q. Ouyang,S. Pacetti,P. Patteri,M. Pelizaeus,H. P. Peng,K. Peters,Joachim Pettersson,J. L. Ping,R. G. Ping,R. Poling,V. Prasad,M. Qi,S. Qian,C. F. Qiao,L. Q. Qin,N. Qin,X. S. Qin,Z. H. Qin,J. F. Qiu,K. H. Rashid,C. F. Redmer,M. Ripka,G. Rong,Ch. Rosner,X. D. Ruan,V. Santoro,A. Sarantsev,A. Sarantsev,A. Sarantsev,M. Savrie,K. Schoenning,S. Schumann,W. Shan,M. Shao,C. P. Shen,P. X. Shen,X. Y. Shen,H. Y. Sheng,W. M. Song,X. Y. Song,S. Sosio,S. Spataro,G. X. Sun,J. F. Sun,S. S. Sun,Y. J. Sun,Y. Z. Sun,Z. J. Sun,Z. T. Sun,C. J. Tang,X. Tang,I. Tapan,E. H. Thorndike,M. Tiemens,M. Ullrich,I. Uman,G. S. Varner,B. Wang,Dayong Wang,D. Y. Wang,K. Wang,L. L. Wang,L. S. Wang,M. Wang,P. L. Wang,P. L. Wang,S. G. Wang,W. P. Wang,X. F. Wang,Yao Wang,Y. F. Wang,Y. Q. Wang,Zujian Wang,Z. G. Wang,Z. H. Wang,Z. Y. Wang,T. Weber,D. H. Wei,J. B. Wei,P. Weidenkaff,S. P. Wen,U. Wiedner,Magnus Wolke,L. H. Wu,Z. Wu,L. G. Xia,Y. Xia,D. Xiao,H. Xiao,Z. J. Xiao,Yuehong Xie,Q. L. Xiu,G. F. Xu,Liqing Xu,Q. J. Xu,X. P. Xu,L. Yan,W. B. Yan,W. C. Yan,Y. H. Yan,H. J. Yang,H. X. Yang,L. Yang,Yang Yang,Y. X. Yang,M. Ye,M. H. Ye,J. H. Yin,B. X. Yu,C. X. Yu,Jie Yu,C. Z. Yuan,W. L. Yuan,Y. Yuan,A. Yuncu,A. Yuncu,A. A. Zafar,A. Zallo,Y. Zeng,B. X. Zhang,B. Y. Zhang,Chi Zhang,C. C. Zhang,D. H. Zhang,H. H. Zhang,H. Y. Zhang,Jia-ju Zhang,J. L. Zhang,J. Q. Zhang,Jianhao Zhang,J. Y. Zhang,J. Z. Zhang,K. Zhang,LiLi Zhang,X. Y. Zhang,Yun-Zhi Zhang,Y. N. Zhang,Y. H. Zhang,Yunlong Zhang,Yu Zhang,Zhiqing Zhang,Z. P. Zhang,Zhenyu Zhang,G. Zhao,J. W. Zhao,Jie Zhao,Jimin Zhao,Lei Zhao,Ling Zhao,M. G. Zhao,Qiang Zhao,Q. W. Zhao,S. J. Zhao,T. C. Zhao,Y. B. Zhao,Z. G. Zhao,A. Zhemchugov,A. Zhemchugov,B. Zheng,J. P. Zheng,W. J. Zheng,Y. H. Zheng,B. Zhong,Li Zhou,Xiang Zhou,X. K. Zhou,X. R. Zhou,X. Y. Zhou,K. J. Zhu,Kejun Zhu,Shou-hua Zhu,S. H. Zhu,Xiaofeng Zhu,Y. C. Zhu,Y. S. Zhu,Z. A. Zhu,J. Zhuang,L. Zotti,B. S. Zou,J. H. Zou +410 more
TL;DR: Based on a sample of eta' mesons produced in the radiative decay J/psi -> gamma eta´ in 1.31 x 10(9) events collected with the BESIII detector, the decay eta'' -> omega e(+)e(-) is observed for the first time, with a statistical significance of 8 sigma.
Search for the Y(4140) via e(+)e(-) -> gamma phi J/psi at root s=4.23, 4.26 and 4.36 GeV
M. Ablikim,M. N. Achasov,Xiaocong Ai,O. Albayrak,M. Albrecht,D. J. Ambrose,A. Amoroso,A. Amoroso,F. F. An,Q. An,J. Z. Bai,R. Baldini Ferroli,Y. Ban,D. W. Bennett,J. V. Bennett,M. Bertani,D. Bettoni,J. M. Bian,F. Bianchi,F. Bianchi,E. Boger,O. Bondarenko,I. Boyko,R. A. Briere,H. Cai,X. Cai,O. Cakir,A. Calcaterra,G. F. Cao,Serkant Ali Cetin,J. F. Chang,G. Chelkov,G. Chen,H. S. Chen,H. S. Chen,J. C. Chen,M. L. Chen,Sai-Juan Chen,X. C. Chen,X. R. Chen,Y. B. Chen,H. P. Cheng,X. K. Chu,G. Cibinetto,D. Cronin-Hennessy,H. L. Dai,J. P. Dai,A. Dbeyssi,D. Dedovich,Z. Y. Deng,A. Denig,I. Denysenko,M. Destefanis,M. Destefanis,F. De Mori,F. De Mori,Y. Ding,C. Dong,J. Dong,L. Y. Dong,M. Y. Dong,S. X. Du,P. F. Duan,J. Z. Fan,J. Fang,S. S. Fang,X. Fang,Yaquan Fang,L. Fava,L. Fava,F. Feldbauer,Giulietto Felici,C. Q. Feng,E. Fioravanti,M. Fritsch,C. D. Fu,Q. Gao,Y. Gao,I. Garzia,K. Goetzen,W. X. Gong,W. Gradl,M. Greco,M. Greco,M. H. Gu,Y. T. Gu,Y. H. Guan,A. Q. Guo,L. B. Guo,T. Guo,Y. Guo,Y. P. Guo,Z. Haddadi,A. Hafner,S. Han,Y. L. Han,F. A. Harris,K. L. He,Z. Y. He,T. Held,Y. K. Heng,Z. L. Hou,C. Hu,H. M. Hu,J. F. Hu,T. Hu,Y. Hu,G. M. Huang,Guangshun Huang,H. P. Huang,J. S. Huang,X. T. Huang,Y. Huang,T. Hussain,Q. P. Ji,Q. P. Ji,X. B. Ji,X. L. Ji,L. L. Jiang,L. W. Jiang,X. S. Jiang,J. B. Jiao,Z. Jiao,D. P. Jin,S. Jin,T. Johansson,A. Julin,N. Kalantar-Nayestanaki,X. L. Kang,X. S. Kang,M. Kavatsyuk,Bibo Ke,R. Kliemt,B. Kloss,O. B. Kolcu,B. Kopf,M. Kornicer,W. Kuehn,Andrzej Kupsc,W. Lai,J. S. Lange,M. Lara,P. Larin,C. H. Li,Cheng Li,D. M. Li,F. Li,G. Li,H. B. Li,J. C. Li,Jin Li,K. Li,P. R. Li,Tao Li,W. D. Li,W. G. Li,X. L. Li,X. M. Li,X. N. Li,X. Q. Li,Z. B. Li,H. Liang,Y. F. Liang,Y. T. Liang,G. R. Liao,D. X. Lin,Brent J. Liu,Chuan Liu,C. X. Liu,Fu-Hu Liu,Fang Liu,Feng Liu,H. B. Liu,H. H. Liu,H. M. Liu,J. H. Liu,J. P. Liu,J. Y. Liu,Kai Liu,K. Y. Liu,L. D. Liu,P. L. Liu,Q. Liu,S. B. Liu,X. Liu,Xiao-Hai Liu,Y. B. Liu,Z. A. Liu,Zhiqiang Liu,Zhiqing Liu,H. Loehner,X. C. Lou,X. C. Lou,H. J. Lu,J. G. Lu,R. Q. Lu,Y. P. Lu,Y. P. Lu,C. L. Luo,M. X. Luo,T. Luo,X. L. Luo,M. Lv,Xiao-Rui Lyu,F. C. Ma,H. L. Ma,L. L. Ma,Q. M. Ma,S. Ma,T. Ma,X. N. Ma,X. Y. Ma,F. E. Maas,M. Maggiora,M. Maggiora,Q. A. Malik,Y. J. Mao,Z. P. Mao,S. Marcello,S. Marcello,J. G. Messchendorp,J. Min,T. J. Min,R. E. Mitchell,X. H. Mo,Y. J. Mo,C. Morales Morales,K. Moriya,N. Yu. Muchnoi,H. Muramatsu,Y. Nefedov,F. Nerling,I. B. Nikolaev,Z. Ning,S. Nisar,S. L. Niu,X. Y. Niu,S. L. Olsen,Q. Ouyang,S. Pacetti,P. Patteri,M. Pelizaeus,H. P. Peng,K. Peters,J. L. Ping,R. G. Ping,R. Poling,Y. N. Pu,M. Qi,S. Qian,C. F. Qiao,L. Q. Qin,N. Qin,X. S. Qin,Yang Qin,Z. H. Qin,J. F. Qiu,K. H. Rashid,C. F. Redmer,Huan Ren,M. Ripka,G. Rong,X. D. Ruan,V. Santoro,A. Sarantsev,M. Savrie,K. Schoenning,S. Schumann,W. Shan,M. Shao,C. P. Shen,P. X. Shen,X. Y. Shen,H. Y. Sheng,M. R. Shepherd,W. M. Song,X. Y. Song,S. Sosio,S. Sosio,S. Spataro,S. Spataro,B. Spruck,G. X. Sun,J. F. Sun,S. S. Sun,Y. J. Sun,Y. Z. Sun,Z. J. Sun,Z. T. Sun,C. J. Tang,X. Tang,I. Tapan,E. H. Thorndike,M. Tiemens,D. Toth,M. Ullrich,I. Uman,G. S. Varner,B. Wang,B. L. Wang,Dayong Wang,D. Y. Wang,K. Wang,L. L. Wang,L. S. Wang,M. Wang,P. L. Wang,P. L. Wang,Qun-Yao Wang,S. G. Wang,W. P. Wang,X. F. Wang,Yao Wang,Y. F. Wang,Y. Q. Wang,Zujian Wang,Z. G. Wang,Z. H. Wang,Z. Y. Wang,T. Weber,D. H. Wei,J. B. Wei,P. Weidenkaff,S. P. Wen,U. Wiedner,Magnus Wolke,L. H. Wu,Z. Wu,L. G. Xia,Y. Xia,D. Xiao,Z. J. Xiao,Yuehong Xie,G. F. Xu,Liqing Xu,Q. J. Xu,Qiunan Xu,X. P. Xu,L. Yan,W. B. Yan,W. C. Yan,Y. H. Yan,H. X. Yang,L. Yang,Yang Yang,Y. X. Yang,Heng-Yun Ye,M. H. Ye,M. H. Ye,J. H. Yin,B. X. Yu,C. X. Yu,H. W. Yu,Jie Yu,C. Z. Yuan,W. L. Yuan,Y. Yuan,A. Yuncu,A. A. Zafar,A. Zallo,Y. Zeng,B. X. Zhang,B. Y. Zhang,Chi Zhang,C. C. Zhang,D. H. Zhang,H. H. Zhang,H. Y. Zhang,J. J. Zhang,J. L. Zhang,J. Q. Zhang,J. W. Zhang,J. Y. Zhang,J. Z. Zhang,K. Zhang,LiLi Zhang,S. H. Zhang,Xuantong Zhang,X. Y. Zhang,Y. Zhang,Y. H. Zhang,Zhiqing Zhang,Z. P. Zhang,Zhenyu Zhang,G. Zhao,J. W. Zhao,Jie Zhao,Jimin Zhao,Lei Zhao,Ling Zhao,M. G. Zhao,Q. Zhao,Q. W. Zhao,S. J. Zhao,T. C. Zhao,Y. B. Zhao,Z. G. Zhao,A. Zhemchugov,B. Zheng,J. P. Zheng,W. J. Zheng,Y. H. Zheng,B. Zhong,L. P. Zhou,Li Zhou,Xiang Zhou,X. K. Zhou,X. R. Zhou,X. Y. Zhou,K. J. Zhu,K. J. Zhu,S. Zhu,Xiaofeng Zhu,Y. C. Zhu,Y. S. Zhu,Z. A. Zhu,J. Zhuang,B. S. Zou,J. H. Zou +418 more
TL;DR: In this paper, the authors search for the production of the charmonium-like state Y(4140) through a radiative transition followed by its decay to phi J/psi.
Search for eta and eta ' invisible decays in J/psi -> phi eta and phi eta '
M. Ablikim,M. N. Achasov,O. Albayrak,D. J. Ambrose,F. F. An,Q. An,J. Z. Bai,Y. Ban,Jürgen Becker,J. V. Bennett,M. Bertani,J. M. Bian,E. Boger,E. Boger,O. Bondarenko,Igor Boyko,R. A. Briere,V. V. Bytev,X. Cai,O. Cakir,A. Calcaterra,G. F. Cao,Serkant Ali Cetin,J. F. Chang,G. A. Chelkov,G. A. Chelkov,G. F. Chen,H. S. Chen,J. C. Chen,M. L. Chen,S. J. Chen,Xiao Dong Chen,Y. B. Chen,H. P. Cheng,Y. P. Chu,D. Cronin-Hennessy,H. L. Dai,J P Dai,D. V. Dedovich,Z. Y. Deng,A. G. Denig,I. Denysenko,M. Destefanis,M. Destefanis,W. M. Ding,Y. Ding,L. Y. Dong,M. Y. Dong,S. X. Du,J. Fang,S. S. Fang,L. Fava,C. Q. Feng,R. B. Ferroli,P. Friedel,C. D. Fu,J. L. Fu,Y. N. Gao,C. Geng,K. Goetzen,W. X. Gong,W. Gradl,M. Greco,M. Greco,M. H. Gu,Y. T. Gu,Y. H. Guan,A. Q. Guo,L. B. Guo,T. Guo,Y. P. Guo,Yulei Han,F. A. Harris,K. L. He,Miao He,Z. Y. He,T. Held,Yuekun Heng,Z. L. Hou,C. Hu,H. M. Hu,Jifeng Hu,T. Hu,Guangming Huang,G. S. Huang,J. S. Huang,L. Huang,X. T. Huang,Yucheng Huang,Yongmei Huang,T. Hussain,C. S. Ji,Q. P. Ji,Q. P. Ji,X. B. Ji,X. L. Ji,L. L. Jiang,X. S. Jiang,J. B. Jiao,Z. Jiao,D. P. Jin,S. Jin,F. F. Jing,Nasser Kalantar-Nayestanaki,M. Kavatsyuk,B. Kopf,M. Kornicer,W. Kuehn,W. Lai,J. S. Lange,M. Leyhe,C. H. Li,Cheng Li,Cui Li,D. M. Li,F. Y. Li,G. Li,H. B. Li,J. C. Li,K. Li,Lei Li,Q. J. Li,S. L. Li,W. D. Li,Wei Li,Xingguo Li,X. N. Li,X. Q. Li,X. R. Li,Z. B. Li,H. Liang,Y. F. Liang,Y. T. Liang,G. R. Liao,X. T. Liao,D. X. Lin,B. J. Liu,Chuan Liu,C. X. Liu,Fu-Hu Liu,Fang Liu,Feng Liu,H. B. Liu,H. B. Liu,Huihui Liu,Haiwen Liu,Hang Liu,J. P. Liu,Kai Liu,K. Y. Liu,Kai Liu,P. L. Liu,Q. Liu,S. B. Liu,X. Liu,Y. B. Liu,Z. A. Liu,Zhiqiang Liu,Zhiqing Liu,H. Loehner,G. R. Lu,H. J. Lu,J. G. Lu,Qi-Wen Lü,Xiao-Tong Lu,Y. P. Lu,C. L. Luo,M. X. Luo,Tao Luo,X. L. Luo,M. Lv,C. L. Ma,F. C. Ma,H. L. Ma,Q. M. Ma,S. Ma,T. Ma,X. Y. Ma,F. E. Maas,M. Maggiora,M. Maggiora,Q. A. Malik,Y. J. Mao,Z. P. Mao,J. G. Messchendorp,J. Min,T. J. Min,R. E. Mitchell,X. H. Mo,C. Morales Morales,N. Yu. Muchnoi,H. Muramatsu,Y. Nefedov,C. Nicholson,I. B. Nikolaev,Z. Ning,S. L. Olsen,Q. Ouyang,S. Pacetti,S. Pacetti,Joong-Won Park,M. Pelizaeus,H. P. Peng,K. Peters,Jialun Ping,R. G. Ping,R. Poling,E. Prencipe,M. Qi,S. Qian,Cong-Feng Qiao,L. Q. Qin,X. S. Qin,Yang Qin,Z. H. Qin,J. F. Qiu,K. H. Rashid,G. Rong,Xiangdong Ruan,A. Sarantsev,B. D. Schaefer,M. Shao,C. P. Shen,X. Y. Shen,H. Y. Sheng,M. R. Shepherd,X. Y. Song,S. Spataro,S. Spataro,B. Spruck,D. H. Sun,G. X. Sun,J. F. Sun,S. S. Sun,Y. J. Sun,Y. Z. Sun,Z. J. Sun,Z. T. Sun,C. J. Tang,X. Tang,I. Tapan,E. H. Thorndike,D. Toth,M. Ullrich,G. S. Varner,B. Q. Wang,Dayong Wang,D. Y. Wang,Ke Wang,L. L. Wang,L. S. Wang,M. Z. Wang,P. L. Wang,P. L. Wang,Qun-Yao Wang,Shan Wang,Xuejun Wang,X. L. Wang,Y. D. Wang,Y. F. Wang,Y. Q. Wang,Zujian Wang,Z. G. Wang,Z. Y. Wang,D. H. Wei,Jian Wei,P. Weidenkaff,Q. G. Wen,S. P. Wen,M. Werner,Ulrich Wiedner,L. H. Wu,N. Wu,S. X. Wu,Wei Wu,Z. Wu,L. G. Xia,Y. X. Xia,Z. J. Xiao,Y. G. Xie,Q. L. Xiu,G. F. Xu,G. M. Xu,Q. J. Xu,Qiunan Xu,X. P. Xu,Zhihao Xu,Feng Xue,Z. Xue,Li Yan,W. B. Yan,Y. H. Yan,H. X. Yang,Yang Yang,Y. X. Yang,Heng-Yun Ye,M. Ye,M. H. Ye,B. X. Yu,C. X. Yu,Hai Yu,Jie Yu,S. P. Yu,C. Z. Yuan,Y. Yuan,A. A. Zafar,A. Zallo,Y. Zeng,B. X. Zhang,B. Y. Zhang,Chi Zhang,C. C. Zhang,D. H. Zhang,H. H. Zhang,H. Y. Zhang,J. Q. Zhang,Jianhao Zhang,J. Y. Zhang,J. Z. Zhang,LiLi Zhang,Rui Zhang,S. H. Zhang,Xuantong Zhang,X. Y. Zhang,Yun-Zhi Zhang,Y. H. Zhang,Zhiqing Zhang,Zhenyu Zhang,Zhenghao Zhang,Gang Zhao,HongSheng Zhao,J. W. Zhao,K. X. Zhao,Lei Zhao,Ling Zhao,M. G. Zhao,Qiang Zhao,Q. Zhao,Shujun Zhao,T. C. Zhao,X. H. Zhao,Y. B. Zhao,Z. G. Zhao,A. Zhemchugov,A. Zhemchugov,B. Zheng,Jianping Zheng,Y. H. Zheng,B. Zhong,Z. Zhong,Li Zhou,X. K. Zhou,X. R. Zhou,C. Zhu,K. J. Zhu,Kejun Zhu,Shou-hua Zhu,X. L. Zhu,Y. C. Zhu,Y. M. Zhu,Y. S. Zhu,Z. A. Zhu,J. Zhuang,B. S. Zou,J. H. Zou +364 more
TL;DR: In this paper, searches for invisible decays of eta and eta'in J/psi → K+K-decays were performed using a sample of (225.3 +/- 2.8) x 10(6) J /psi decays collected with the BESIII detector at BEPCII.