Search for the isospin violating decay Y(4260)→J/ψηπ$^0$

M Ablikim,H X Yang,H L Ren,Tanveer Hussain,H W Yu,T Held,G Varner,F H Liu,T Li,W X Gong,Z Y He,X Tang,W Shan,Y Hu,Q A Malik,Ling Zhao,J F Qiu, Shengwei Zhu, J Z Zhao,R A Briere,P F Duan,A Zhemchugov,K Goetzen,J S Yu,S L Olsen,Hsou Mei Hu,M Kavatsyuk,K Peters,I Tapan,Y G Xie,Y N Pu,Y F Wang,Z Y Deng,S A Cetin,H P Peng, Maoyin Wang,S Pacetti,Bing Zheng,Z G Zhao,Y J Mao,I Boyko,S X Du,H L Dai,M Destefanis,Garng M Huang,H P Cheng,Tao Luo,Martin Albrecht,Y P Guo,Y B Zhao,P L Wang, Tianfei Ma,A Kupsc,Q Gao,H Y Zhang,K Y Liu,C C Zhang, B L Wang,Yong Huang,M N Achasov,D X Lin,Thorsten Weber, Chong He Li,K Moriya,U Wiedner,Y J Mo,Y H Guan,T Hu,X X Liu, X F Wang,Chao Dong,X T Huang,Z B Li,Z Jiao,L Zotti,H P Huang,E Fioravanti,J C Li,J L Ping,R E Mitchell,G Rong,D Bettoni,Zhi Hui Zhang,Lei Li,S Marcello,H Y Sheng,D M Li,Z Ning,Jan B C Pettersson,Z Haddadi,A Calcaterra,T C Zhao,S S Fang,F C Ma,I Uman,S Sosio,A Q Guo, B J Liu,I Garzia,C Z Yuan,L G Xia,Q P Ji, W G Li, L Q Qin,H H Liu,Q An,Li Zhou,A G Denig,J S Lange,X Y Song,W J Zheng, Sangjun Han,J S Huang, A Zallo,C X Yu,A Hafner, D Y Wang,C D Fu,O Cakir,K L He, J Y Liu,E H Thorndike,J P Zheng,M Tiemens,Mingwang Shao,Z A Zhu,Ming Qi,Z A Liu,S P Wen,G F Cao,K Schoenning,O Bondarenko,O Albayrak,X Y Shen,J Z Zhang, Y B Liu,G F Xu,C F Qiao,X R Chen,Z Y Wang,Y T Gu,Q W Zhao,J C Chen,H B Li,J B Jiao,Y Nefedov, F E Maas,A Amoroso,L Fava,F F An,G Cibinetto,H J Lu,X Y Niu,H Liang,Y H Zheng, L H Wu,Z T Sun,D W Bennett, B X Yu,Z H Qin,F Bianchi,S J Zhao,Yanping Ding,G Zhao,Xiong Cai,A Dbeyssi, C L Luo,R Baldini Ferroli,L W Jiang,Qun Ouyang, C P Shen, Linghua Yan, R Kliemt,P R Li,M X Luo,C F Redmer, Y S Zhu,Qin Liu,M Pelizaeus,X C Ai,Y P Lu, H L Ma,Jun Fang,H Ye,N Qin,X L Luo,L D Liu, L Y Dong,J B Wei,B C Ke,B Zhong,Z J Xiao,R Poling, S B Liu,J Min,W Gradl,H Y Chen,T J Min,A V Sarantsev, Xusheng Fang,P L Liu,L B Guo,W C Yan,B S Zou,X Y Ma,C Q Feng,X S Jiang,X L Ji,H Loehner,Yong Xia, H Muramatsu,X Y Gao,Guo Li,C J Tang,C X Liu,M Ullrich,E Boger,M Maggiora, Jianjin Dong,Z P Mao,A Yuncu,Y H Yan,Dong Xiao,J F Chang,W Kuhn,M L Chen,Sijin Qian,M Ripka, Chaoying Hu,Y B Chen,F A Harris,Xi Peng Xu,S G Wang,Z Gao,K Wang, J F Sun,G Felici,Li Yang, Y Z Sun,C Geng,S Nisar,J H Yin,C Morales Morales,S S Sun,M Bertani,K J Zhu,X Q Hao,J Z Bai,M H Ye,Q M Ma,K H Rashid,X C Lou,V Santoro,Q J Wang,D P Jin,N Kalantarnayestanaki, L L Ma,M G Zhao,A Julin,X S Kang,D V Dedovich,F Nerling,J M Bian,Kai Li,D Croninhennessy,Yanqing Zeng,D H Wei,M H Gu,J G Messchendorp,R G Ping,J Z Fan,N Yu Muchnoi,D H Zhang,J H Zou,Maria S Greco,X N Li,Y F Liang,G R Liao,P Weidenkaff,X D Ruan, Zhenkun Wu,J V Bennett,Q J Xu, Wenjian Wang,P Patteri,X R Zhou,I Denysenko, Shun Hua Zhang, Thomas Johansson,W L Yuan,Yongsheng Gao,M Kornicer,C Leng,I B Nikolaev,Guoming Chen,W M Song,P Larin,S Schumann,M Y Dong, Maoshui Lv,Wei Lai,X H Mo,Lei Zhang,X S Qin,J F Hu,Y Qin,B Kloss,D Toth,Lisa L Wang,S Spataro,Y Fang,S J Chen,X K Chu,L Xu,M Wolke,M Savrie,S L Niu,X Y Zhang,Feng Li,Y Ban,B X Zhang,J P Dai,Y H Zhang,O B Kolcu,J G Lu,P X Shen,A A Zafar,B Kopf, J Zhuang,Kang Zhang,S Jin,M Lara,Yuan Yuan,Q L Xiu,Y X Yang,Z L Hou,R Q Lu,G A Chelkov,Hui Cai,D Ambrose,F Feldbauer,F De Mori,M Fritsch,X L Zhu,Y K Heng,G X Sun,X R Lyu,Y L Han,S Ma

PHYSICAL REVIEW D（2015）

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摘要

Using data samples collected at center-of-mass energies of root s = 4.009, 4.226, 4.257, 4.358, 4.416, and 4.599 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the isospin violating decay Y(4260)-> J/psi eta pi(0). No signal is observed, and upper limits on the cross section sigma(e(+)e(-) -> J/psi eta pi(0)) at the 90% confidence level are determined to be 3.6, 1.7, 2.4, 1.4, 0.9, and 1.9 pb, respectively.

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positron,electron,statistical analysis

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