Observation ofe+e−→γX(3872)at BESIII

X. Ai,O. Albayrak,D. Ambrose,F. An,Q. An,J. Bai,R. Ferroli,Y. Ban,J. Bennett,M. Bertani,J. Bian,E. Boger,O. Bondarenko,I. Boyko,S. Braun,R. Briere,H. Cai,X. Cai,Ö. Çakır,A. Calcaterra,G. Cao,S. Çetin,J. Chang,G. Chelkov,G. Chen,H. Chen,J. Chen,M. Chen,S. Chen,X. Chen,Y. Chen,H. Cheng,X. Chu,Y. Chu,D. Cronin-Hennessy,H. Dai,J. Dai,D. Dedovich,Z. Deng,A. Denig,I. Denysenko,M. Destefanis,W. Ding,Y. Ding,C. Dong,J. Dong,L. Dong,M. Dong,S. Du,J. Fan,J. Fang,S. Fang,Y. Fang,L. Fava,C. Feng,C. Fu,J. Fu,Q. Gao,Y. Gao,C. Geng,K. Goetzen,W. Gong,W. Gradl,M. Greco,M. Gu,Y. Gu,Y. Guan,A. Guo,L. Guo,Tingting Guo,Y. Guo,Yaling Han,F. Harris,K. He,M. He,Z. He,T. Held,Y. Heng,Z. Hou,Chenguo Hu,H. Hu,J. Hu,G. Huang,J.S.T. Huang,L. Huang,X. Huang,Yin Huang,T. Hussain,C. Ji,Q. Ji,X. Ji,L. Jiang,Xin Jiang,J. Jiao,Z. Jiao,D. Jin,S. Jin,T. Johansson,N. Kalantar-Nayestanaki,X. Kang,M. Kavatsyuk,B. Kloss,B. Kopf,M. Kornicer,W. Kuehn,A. Kupść,W. Lai,J. Lange,M. Lara,P. Larin,M. Leyhe,C. Li,Cheng Li,Cui Li,D. Li,F. Li,G. Li,H. Li,J. Li,K. Li,Kangwei Li,P. Li,Q. Li,T. Li,W. Li,X. Li,Z. Li,H. Liang,Y. Liang,D. Lin,B. Liu,C. Liu,F. Liu,Fang Liu,Feng Liu,H. Liu,Jingjing Liu,K. Liu,P. Liu,Q. Liu,S. Liu,X. Liu,Y. Liu,Z. Liu,Zhiqiang Liu,Zhiqing Liu,H. Loehner,X. Lou,G. Lu,H. Lu,J. Lu,X. Lu,Y. Lu,C. Luo,M. Luo,T. Luo,X. Luo,M. Lv,F. C.,Q. M.,S. Ma,T. Ma,X. Y.,F. Maas,M. Maggiora,Q. Malik,Y. Mao,Z. Mao,J. Messchendorp,J. Min,T. Min,R. Mitchell,X. Mo,Y. Mo,H. Moeini,C. Morales,K. Moriya,N. Muchnoi,H. Muramatsu,Y. Nefedov,I. Nikolaev,Z. Ning,S. Nisar,X. Niu,S. Olsen,Q. Ouyang,S. Pacetti,M. Pelizaeus,H. Peng,K. Peters,J. Ping,R. Ping,R. Poling,E. Prencipe,Mingyao Qi,S. Qian,C. Qiao,L. Qin,X. Qin,Y. Qin,H. Qi,J. Qiu,K. Rashid,C. Redmer,M. Ripka,G. Rong,X. Ruan,A. Sarantsev,K. Schoenning,S. Schumann,W. Shan,M. Shao,C. Shen,X. Shen,H. Sheng,M. Shepherd,W. Song,X. Song,S. Spataro,B. Spruck,G. Sun,J. Sun,S. Sun,Y. Sun,Z. Sun,C. Tang,X. Tang,İ. Tapan,E. Thorndike,D. Toth,M. Ullrich,I. Uman,G. Varner,B. Wang,D. Wang,K. Wang,L. Wang,M. Wang,P. Wang,Q. Wang,S. Wang,W. Wang,X. Wang,Yaqian Wang,Y. Wang,Z. Wang,D. Wei,J. Wei,P. Weidenkaff,S. Wen,M. Werner,U. Wiedner,M. Wolke,L. Wu,N. Wu,Z. Wu,L. Xia,Y. Xia,D. Xiao,Z. Xiao,Y. Xie,Q. Xiu,G. Xu,L. Xu,Q. Xu,X. Xu,Z. Xue,L. Yan,W. Yan,Y. Yan,H. Yang,Y. Yang,H. Ye,M. Ye,B. Yu,C. Yu,H. Yu,J. Yu,S. Yu,C. Yuan,Y. Yuan,A. Zafar,A. Zallo,S. Zang,Y. Zeng,B. Zhang,C. Zhang,H. Zhang,D. Zhang,J. Zhang,S. Zhang,X. Zhang,Y. Zhang,Z. Zhang,G. Zhao,J. Zhao,Lei Zhao,Ling Zhao,M. Zhao,Q. Zhao,S. Zhao,T. Zhao,X. Zhao,Y. Zhao,Z. Zhao,A. Zhemchugov,B. Zheng,J. Zheng,Y. Zheng,B. Zhong,L. Zhou,Li Zhou,X. Zhou,K. Zhu,Xiaoyu Zhu,Y. Zhu,Z. Zhu,J. Zhuang,B. Zou,J. Zou,Xiaocong Ai,O. Çakır,S. Eidelman