Study of Decay J/ψ→γγV(ρ,φ)

JingZhi Bai,Yong Ban,Jianguo Bian,AiDong Chen,GuangPei Chen,Hongfang Chen,Hesheng Chen,Jiangchuan Chen,Xindong Chen,Yuanbo Chen,BaoSen Cheng,Yuanping Chu,XiangZong Cui,Huiliang Ding,YouShan Dai,LiaoYuan Dong,Zhizhen Du,Cuishan Gao,Shuqi Gao,Shudi Gu,Yanan Guo,Zijin Guo,ShiWen Han,Ying Han,JingTang He,Ju Jingtang,KangLin He,Mao He,Xiang He,Yuekun Heng,Tao Hong,GuiYun Hu,Haiming Hu,JingLiang Hu,Qionghui Hu,Tao Hu,GuangShun Huang,Xiuping Huáng,YinZhi Huang,Chunhua Jiang,Yan Jin,Xin Ju,ZunJian Ke,Yuanfen Lai,Pengfei Lang,Canguo Li,De Li,Haibo Li,Jiacai Li,Jin Li,Peiqin Li,Qiuju Li,RenYing Li,Wei Li,Weiguo Li,Xiaonan Li,Xinhua Li,Xueqian Li,Zhongchao Li,Bin Liu,Feng Liu,Huaimin Liu,Jing Liu,Jueping Liu,Rongguang Liu,Yong Liü,ZhongXiu Liu,Feng Liu,GongRu Lu,Feng Lü,JunGuang Lü,ZhiJian Lü,XiaoLan Luo,Encheng Ma,Jimao Ma,Huishun Mao,Zepu Mao,Xiangcheng Meng,XiaoHu Mo,Jing Nie,ZhenDong Nie,NaDing Qi,Xiangrong Qi,ChengDe Qian,Jinfa Qiu,YouKun Que,Gang Rong,YuYing Shao,BenWei Shen,DingLi Shen,Hong Shen,Xiaoyan Shen,Huayi Sheng,Feng Shi,Huanzhang Shi,Xiaofei Song,HanSheng Sun,LiangFeng Sun,YongZhao Sun

Kao Neng Wu Li Yu Ho Wu Li/High Energy Physics and Nuclear Physics（2000）

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摘要

Based on 7.8 × 106 J/ψ events collected by BES experiment, J/ψ radiative decay J/ψ→γγV(ρ,φ) have been studied. The η(1430) resonance has been observed in these two channels respectively. Its mass, width and branching ratio are 1431 ± 17MeV, 88 ± 28MeV, and Br(J/ψ→γη(1430)) Br(η(1430)→γρ) = (1.1 ± 0.5 ± 0.3) × 10-4 from J/ψ→γγρ mode, 1424 ± 15MeV, 73 ± 58MeV, and Br(J/ψ→γη(1430)) Br(η(1430)→γφ) = (2.0 ± 1.0 ± 0.6) × 10-4 from J/ψ→γγφ mode.

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Glueball,J/ψ,Meson,Resonance

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