Study of J/ψ→γπ0π0 at BES

JingZhi Bai,Jianguo Bian,Zhengwei Chai,GuangPei Chen,Hongfang Chen,Jiangchuan Chen,Yaqing Chen,Yu Chen,Yuanbo Chen,BaoSen Cheng,XiangZong Cui,Huiliang Ding,LiaoYuan Dong,Zhizhen Du,Sheng Feng,Cuishan Gao,Meili Gao,Shuqi Gao,Jianhui Gu,Shudi Gu,Weixin Gu,Yifan Gu,Yanan Guo,Zijin Guo,Shiweng Han,Ying Han,JingTang He,Ju Jingtang,Mao He,GuiYun Hu,Haiming Hu,JingLiang Hu,Qionghui Hu,Tao Hu,Xiaoqing Hu,Jundong Huang,YinZhi Huang,Chunhua Jiang,Yan Jin,ZunJian Ke,Yuanfen Lai,Pengfei Lang,Canguo Li,De Li,Haibo Li,Jin Li,Peiqin Li,Rubo Li,Wei Li,Weidong Li,Weiguo Li,Xinhua Li,Xiaonan Li,Huaimin Liu,Jing Liu,Jinghua Liu,Rongguang Liu,Yong Liü,Feng Lü,JunGuang Lü,Jianye Lu,Lanchun Lu,Chunhui Luo,Aimin Ma,Encheng Ma,Jimao Ma,Huishun Mao,Zepu Mao,Xiangcheng Meng,Jing Nie,NaDing Qi,Xiangrong Qi,ChengDe Qian,Jinfa Qiu,Yunhe Qu,YouKun Que,Gang Rong,YuYing Shao,Bengwei Shen,DingLi Shen,Hong Shen,Xiaoyan Shen,Huayi Sheng,Huanzhang Shi,Xiaofei Song,Fang Sun,HanSheng Sun,SuQiu Tang,Guoliang Tong,Feng Wang,Linzhou Wang,Lingshu Wang,Man Wang,Meng Wang,Peiliang Wang,Pinǵ Wang,Shaomin Wang,Taijie Wang,Yunyong Wang

Kao Neng Wu Li Yu Ho Wu Li/High Energy Physics and Nuclear Physics（1999）

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摘要

The decay J/ψ→γπ0π0 is studied with 7.0 × 106 produced J/ψ events collected by the Beijing Spectrometer (BES) with the trigger mode sensetive to both charged and neutral final state at the Beijing Electron-Positron Collider (BEPC). The evidences for the existence of fJ (1710) and ξ (2230) in this channel are presented, and the corresponding masses as well as the product branching ratios are obtained.

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关键词

ξ (2230),BES,Branching ratio,Glueball,J/ψ radiative decay

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