Measurement of the Branching Ratios for J/ψγπ0, γη'→3γ on the BES

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Bai Jingzhi, Bian Jianguo, Chai Zhengwei, Chen Guangpei, Chen Hongfang, Chen Jiangchuan, Chen Shaomin, Chen Yaqing, Chen Yu, Chen Yuanbo, Cheng Baosen, Cui Xiangzong, Ding Huiliang, Du Zhizhen, Fan Xiaoling, Fang Jian, Gao Cuishan, Gao Meili, Gao Shuqi, Gu Jianhui, Gu Shudi, Gu Weixin, Gu Yifan, Guo Yanan, Han Shiwen, Han Ying, He Jingtang, He Ju, He Mao, Hu Guiyun, Hu Jingliang, Hu Qionghui, Hu Tao, Hu Xiaoqing, Huang Xiuping, Huang Yinzhi, Jiang Chunhua, Jin Shan, Jin Yan, Kang Shuhui, Ke Zunjian, Lai Yuanfen, Lan Huibin, Lang Pengfei, Li Jin, Li Peiqin, Li Qun, Li Rubai, Li Wei, Li Weidong, Li Weiguo, Li Xinhua, Li Xiaonan, Lin Shuzi, Liu Huaimin, Liu Jing, Liu Jinghua, Liu Qi, Liu Rongguang, Liu Yan, Liu Zhenan, Lü Feng, Lü Junguang, Lu Jianye, Luo Shuanqun, Luo Yong, Ma Aimin, MaEncheng, Ma Jimao, Mao Huishun, Mao Zepu, Meng Xiangcheng, Ni Hulling, Nie Jing, Qi Nading, Qu Yunhe, Qiu Jinfa, Que Youkun, Rong Gang, Shao Yuying, Shen Benwei, Shen Dingli, Shen Hong, Shen Xiaoyan, Sheng Huayi, Shi Huanzhang, Song Xiaofei, Sun Fang, Sun Hansheng, Sun Shijun, Tan Yiping, Tang Suqiu, Tian Jianling, Tong Guoliang, Wang Feng, Wang Jufang, Wang Linzhou, Wang Lingshu, Wang Man, Wang Meng, Wang Peiliang, Wang Ping, Wang Shaomin, Wang Taijie, Wang Yunyong, Wei Chenglin, Wu Yougeng, Xi Deming, Xia Xiaomi, Xie Peipei, Xiong Weijun, Xu Guofa, Xu Rongsheng, Xu Zhijing, Xue Shengtian, Yan Jie, Yan Wuguang, Yang Changyou, Yang Chunmin, Yang Jie, Yang Xiaofeng, Ye Minghan, Ye Shizhang, Ye Shuwei, Yi Kai, Yu Chuansong, Yu Chunxu, Yu Zhitang, Yu Zhongqiang, Yuan Changzheng, Zhang Bingyun, Zhang Changchun, Zhang Dahua, Zhang Dehong, Zhang Huiling, Zhang Jian, Zhang Jiawen, Zhang Lin, Zhang Liangsheng, Zhang Qinjian, Zhang Shaoqiang, Zhang Xueyao, Zhang Yu, Zhang Yueyuan, Zhao Dixin, Zhao Haiwen, Zhao Jingwei, Zhao Meng, Zhao Weiren, Zheng Jianping, Zheng Linsheng, Zheng Zhipeng, Zhou Guangpu, Zhou Huashi, Zhou Li, Zhou Yuehua, Zhu Guoyi, Zhu Qiming, Zhu Yongsheng, Zhu Yucan and Zhuang Baoan. Measurement of the Branching Ratios for J/ψγπ0, γη'→3γ on the BES[J]. Chinese Physics C, 1997, 21(S2): 9-14.
Bai Jingzhi, Bian Jianguo, Chai Zhengwei, Chen Guangpei, Chen Hongfang, Chen Jiangchuan, Chen Shaomin, Chen Yaqing, Chen Yu, Chen Yuanbo, Cheng Baosen, Cui Xiangzong, Ding Huiliang, Du Zhizhen, Fan Xiaoling, Fang Jian, Gao Cuishan, Gao Meili, Gao Shuqi, Gu Jianhui, Gu Shudi, Gu Weixin, Gu Yifan, Guo Yanan, Han Shiwen, Han Ying, He Jingtang, He Ju, He Mao, Hu Guiyun, Hu Jingliang, Hu Qionghui, Hu Tao, Hu Xiaoqing, Huang Xiuping, Huang Yinzhi, Jiang Chunhua, Jin Shan, Jin Yan, Kang Shuhui, Ke Zunjian, Lai Yuanfen, Lan Huibin, Lang Pengfei, Li Jin, Li Peiqin, Li Qun, Li Rubai, Li Wei, Li Weidong, Li Weiguo, Li Xinhua, Li Xiaonan, Lin Shuzi, Liu Huaimin, Liu Jing, Liu Jinghua, Liu Qi, Liu Rongguang, Liu Yan, Liu Zhenan, Lü Feng, Lü Junguang, Lu Jianye, Luo Shuanqun, Luo Yong, Ma Aimin, MaEncheng, Ma Jimao, Mao Huishun, Mao Zepu, Meng Xiangcheng, Ni Hulling, Nie Jing, Qi Nading, Qu Yunhe, Qiu Jinfa, Que Youkun, Rong Gang, Shao Yuying, Shen Benwei, Shen Dingli, Shen Hong, Shen Xiaoyan, Sheng Huayi, Shi Huanzhang, Song Xiaofei, Sun Fang, Sun Hansheng, Sun Shijun, Tan Yiping, Tang Suqiu, Tian Jianling, Tong Guoliang, Wang Feng, Wang Jufang, Wang Linzhou, Wang Lingshu, Wang Man, Wang Meng, Wang Peiliang, Wang Ping, Wang Shaomin, Wang Taijie, Wang Yunyong, Wei Chenglin, Wu Yougeng, Xi Deming, Xia Xiaomi, Xie Peipei, Xiong Weijun, Xu Guofa, Xu Rongsheng, Xu Zhijing, Xue Shengtian, Yan Jie, Yan Wuguang, Yang Changyou, Yang Chunmin, Yang Jie, Yang Xiaofeng, Ye Minghan, Ye Shizhang, Ye Shuwei, Yi Kai, Yu Chuansong, Yu Chunxu, Yu Zhitang, Yu Zhongqiang, Yuan Changzheng, Zhang Bingyun, Zhang Changchun, Zhang Dahua, Zhang Dehong, Zhang Huiling, Zhang Jian, Zhang Jiawen, Zhang Lin, Zhang Liangsheng, Zhang Qinjian, Zhang Shaoqiang, Zhang Xueyao, Zhang Yu, Zhang Yueyuan, Zhao Dixin, Zhao Haiwen, Zhao Jingwei, Zhao Meng, Zhao Weiren, Zheng Jianping, Zheng Linsheng, Zheng Zhipeng, Zhou Guangpu, Zhou Huashi, Zhou Li, Zhou Yuehua, Zhu Guoyi, Zhu Qiming, Zhu Yongsheng, Zhu Yucan and Zhuang Baoan. Measurement of the Branching Ratios for J/ψγπ0, γη'→3γ on the BES[J]. Chinese Physics C, 1997, 21(S2): 9-14. shu
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Received: 1996-10-08
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    Supported by the National Natural Science Foundation of China.

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Measurement of the Branching Ratios for J/ψγπ0, γη'→3γ on the BES

  • 1. Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing, China;
  • 2. Department of Modem Physics, University of Science and Technology of China, Hefei, China;
  • 3. Department of Physics, Shandong University, Jinan, China
Fund Project:  Supported by the National Natural Science Foundation of China.

Abstract: Decays of the J/ψ resonance into the three-photon final state are investigated. Branching ratios for the decays of J/ψγπ0 and J/ψγη' are determined to be Br(J/ψγπ0)=(4.6±1.1)×10-5 and Br(J/ψγη')=(4.12±0.82)—10-3. The ratio of the two decay widths, Γ(J/ψγη')/Γ(J/ψγη),is 4.79±0.85. This value agrees weM with the predictions of the two theoretical models.

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