Measurement of the branching fractions of ψ(2S)→3(π+π-) and J/ψ→2(π+π-) -: art. no. 012002

被引：6
|
作者：
Ablikim, M [1 ]
Bai, JZ
Ban, Y
Bian, JG
Cai, X
Chang, JF
Chen, HF
Chen, HS
Chen, HX
Chen, JC
Chen, J
Chen, J
Chen, ML
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, HL
Dai, YS
Deng, ZY
Dong, LY
Dong, QF
Du, SX
Du, ZZ
Fang, J
Fang, SS
Fu, CD
Fu, HY
Gao, CS
Gao, YN
Gong, MY
Gong, WX
Gu, SD
Guo, YN
Guo, YQ
Guo, ZJ
Harris, FA
He, KL
He, M
He, X
Heng, YK
Hu, HM
Hu, T
Huang, GS
Huang, XP
Huang, XT
Ji, XB
Jiang, CH
Jiang, XS
Jin, DP
机构：
[1] Inst High Energy Phys, Beijing 100049, Peoples R China
[2] CCAST, China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China
[3] Guangxi Normal Univ, Guilin 541004, Peoples R China
[4] Guangxi Univ, Nanning 530004, Peoples R China
[5] Henan Normal Univ, Xinxiang 453002, Peoples R China
[6] Huazhong Normal Univ, Wuhan 430079, Peoples R China
[7] Hunan Univ, Changsha 410082, Peoples R China
[8] Liaoning Univ, Shenyang 110036, Peoples R China
[9] Nanjing Normal Univ, Nanjing 210097, Peoples R China
[10] Nankai Univ, Tianjin 300071, Peoples R China
[11] Peking Univ, Beijing 100871, Peoples R China
[12] Shandong Univ, Jinan 250100, Peoples R China
[13] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China
[14] Sichuan Univ, Chengdu 610064, Peoples R China
[15] Tsinghua Univ, Beijing 100084, Peoples R China
[16] Univ Hawaii, Honolulu, HI 96822 USA
[17] Univ Sci & Technol China, Anhua 230026, Peoples R China
[18] Wuhan Univ, Wuhan 420072, Peoples R China
[19] Zhejiang Univ, Hangzhou 310028, Peoples R China
来源：
PHYSICAL REVIEW D | 2005年 / 72卷 / 01期
关键词：
D O I：
10.1103/PhysRevD.72.012002
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using data samples collected at root s=3.686 GeV and 3.650 GeV by the BESII detector at the BEPC, the branching fraction of psi(2S)-> 3(pi(+)pi(-)) is measured to be [5.45 +/- 0.42(stat)+/- 0.87(syst)] x 10(-4), and the relative branching fraction of J/psi -> 2(pi(+)pi(-)) to that of J/psi ->mu(+)mu(-) is measured to be [6.01 +/- 0.20(stat)+/- 0.48(syst)]% via psi(2S)->pi(+)pi(-)J/psi, J/psi -> 2(pi(+)pi(-)). The electromagnetic form factor of 3(pi(+)pi(-)) is determined to be 0.19 +/- 0.02 and 0.24 +/- 0.02 at root s=3.650 GeV and 3.686 GeV, respectively.
引用
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页码：1 / 9
页数：9
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