Observation of p(p)over-barπ0 and p(p)over-barη in ψ′ decays -: art. no. 072006

被引:34
|
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, 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 430072, Peoples R China
[19] Zhejiang Univ, Hangzhou 310028, Peoples R China
来源
PHYSICAL REVIEW D | 2005年 / 71卷 / 07期
关键词
D O I
10.1103/PhysRevD.71.072006
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The processes psi'-> p (p) over bar pi(0) and psi'-> p(p) over bar eta are studied using a sample of 14x10(6) psi(') decays collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider. The branching fraction of psi'-> p (p) over bar pi(0) is measured with improved precision as (13.2 +/- 1.0 +/- 1.5)x10(-5), and psi'-> p(p) over bar eta is observed for the first time with a branching fraction of (5.8 +/- 1.1 +/- 0.7)x10(-5), where the first errors are statistical and the second ones are systematic.
引用
收藏
页码:1 / 8
页数:8
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