Determination of B(χcJ→p$$(p)over-bar) in ψ(2S) decays -: art. no. 092001

被引：5
作者：
Bai, JZ [1 ]
Ban, Y
Bian, JG
Cai, X
Chang, JF
Chen, HF
Chen, HS
Chen, HX
Chen, J
Chen, JC
Chen, J
Chen, ML
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, HL
Dai, YS
Deng, ZY
Dong, LY
Du, SX
Du, ZZ
Fang, J
Fang, SS
Fu, CD
Fu, HY
Fu, LP
Gao, CS
Gao, ML
Gao, YN
Gong, MY
Gong, WX
Gu, SD
Guo, YN
Guo, YQ
Guo, ZJ
Han, SW
Harris, FA
He, J
He, KL
He, M
He, X
Heng, YK
Hu, HM
Hu, T
Huang, GS
Huang, L
Huang, XP
Ji, XB
Jia, QY
机构：
[1] Inst High Energy Phys, Beijing 100039, Peoples R China
[2] China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China
[3] Guangxi Normal Univ, Guilin 541004, Peoples R China
[4] Henan Normal Univ, Xinxiang 453002, Peoples R China
[5] Huazhong Normal Univ, Wuhan 430079, Peoples R China
[6] Hunan Univ, Changsha 410082, Peoples R China
[7] Liaoning Univ, Shenyang 110036, Peoples R China
[8] Nanjing Normal Univ, Nanjing 210097, Peoples R China
[9] Nankai Univ, Tianjin 300071, Peoples R China
[10] Peking Univ, Beijing 100871, Peoples R China
[11] Shandong Univ, Jinan 250100, Peoples R China
[12] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China
[13] Sichuan Univ, Chengdu 610064, Peoples R China
[14] Tsinghua Univ, Beijing 100084, Peoples R China
[15] Univ Hawaii, Honolulu, HI 96822 USA
[16] Univ Sci & Technol China, Hefei 230026, Peoples R China
[17] Wuhan Univ, Wuhan 430072, Peoples R China
[18] Zhejiang Univ, Hangzhou 310028, Peoples R China
来源：
PHYSICAL REVIEW D | 2004年 / 69卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.69.092001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The processes psi(2S)-->gammachi(cJ), chi(cJ)-->p(p) over bar $ (J=0,1,2) are studied using a sample of 14x10(6) psi(2S) decays collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider. Very clear chi(c0), chi(c1) and chi(c2) signals are observed, and the branching fractions B(chi(cJ)--><p(p)over bar >) (J=0,1,2) are determined to be (27.1(-3.9)(+4.3)+/-4.7)x10(-5), (5.7(-1.5)(+1.7)+/-0.9)x10(-5), and (6.5(-2.1)(+2.4)+/-1.0)x10(-5), respectively, where the first errors are statistical and the second are systematic.
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页数：6
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