Structure analysis of the f(J)(1710) in the radiative decay J/psi->gamma K+K-

被引:0
|
作者
Bai, JZ
Bian, JG
Chai, ZW
Chen, GP
Chen, HF
Chen, JC
Chen, SM
Chen, Y
Chen, YB
Chen, YQ
Cheng, BS
Cheng, ZD
Cui, XZ
Ding, HL
Ding, WY
Du, ZZ
Fan, XL
Fang, J
Gao, CS
Gao, ML
Gao, SQ
Gu, JH
Gu, SD
Gu, WX
Gu, YF
Guo, YN
Han, SW
Han, Y
He, J
He, M
Hu, GY
Hu, JL
Hu, QH
Hu, T
Hu, XQ
Huang, XP
Huang, YZ
Jiang, CH
Jin, S
Jin, Y
Kang, SH
Ke, ZJ
Lai, YF
Lan, HB
Lang, PF
Li, J
Li, PQ
Li, Q
Li, RB
Li, W
机构
[1] UNIV SCI & TECHNOL CHINA, HEFEI 230026, PEOPLES R CHINA
[2] SHANDONG UNIV, JINAN 250100, PEOPLES R CHINA
关键词
D O I
10.1103/PhysRevLett.77.3959
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The data on J/psi --> gamma K+K- from the BES experiment at the Beijing electron-positron collider have been analyzed. We find two resonances in the 1.7 GeV region which were identified as f(J)(1710): a scalar with mass 1781 +/- 8(-31)(+10)(MeV) and width 85 +/- 24(-19)(+22)(MeV), and a tensor with mass 1696 +/- 5(-34)(+9)(MeV) and width 103 +/- 18(-11)(+30)(MeV). The resulting branching ratios; B(J/psi --> gamma f(J))B(f(J) --> K+K-) are (0.8 +/- 0.1-(+0.3)(0.1))10(-4) for J = 0 and (2.5 +/- 0.4(-0.4)(+0.9))10(-4) for J = 2, respectively.
引用
收藏
页码:3959 / 3962
页数:4
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