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, 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

页码：1 / 9

页数：9

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