Measurements of the branching fractions for ψ(3770)→D0(D)over-bar-0, D+D-, D(D)over-bar, and the resonance parameters of ψ(3770) and ψ(2S)

被引：89
作者：
Ablikim, M. [1 ]
Bai, J. Z.
Ban, Y.
Bian, J. G.
Cai, X.
Chen, H. F.
Chen, H. S.
Chen, H. X.
Chen, J. C.
Chen, Jin
Chen, Y. B.
Chi, S. P.
Chu, Y. P.
Cui, X. Z.
Dai, Y. S.
Deng, Z. Y.
Dong, L. Y.
Dong, Q. F.
Du, S. X.
Du, Z. Z.
Fang, J.
Fang, S. S.
Fu, C. D.
Gao, C. S.
Gao, Y. N.
Gu, S. D.
Gu, Y. T.
Guo, Y. N.
Guo, Y. Q.
He, K. L.
He, M.
Heng, Y. K.
Hu, H. M.
Hu, T.
Huang, X. P.
Huang, X. T.
Ji, X. B.
Jiang, X. S.
Jiao, J. B.
Jin, D. P.
Jin, S.
Jin, Yi
Lai, Y. F.
Li, G.
Li, H. B.
Li, H. H.
Li, J.
Li, R. Y.
Li, S. M.
Li, W. D.
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] Sichuan Univ, Chengdu 610064, Peoples R China
[14] Tsinghua Univ, Beijing 100084, Peoples R China
[15] Univ Sci & Technol China, Anhua 230026, Peoples R China
[16] Wuhan Univ, Wuhan 430072, Peoples R China
[17] Zhejiang Univ, Hangzhou 310028, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.97.121801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We measure the branching fractions for psi(3770)-> D-0(D) over bar (0), D+D-, D (D) over bar, and non-D (D) over bar to be (46.7 +/- 4.7 +/- 2.3)%, (36.9 +/- 3.7 +/- 2.8)%, (83.6 +/- 7.3 +/- 4.2)%, and (16.4 +/- 7.3 +/- 4.2)%, respectively. The resonance parameters of psi(3770) and psi(2S) are measured to be M-psi(3770)=3772.2 +/- 0.7 +/- 0.3 MeV, Gamma(tot)(psi(3770))=26.9 +/- 2.4 +/- 0.3 MeV, and Gamma(ee)(psi(3770))=251 +/- 26 +/- 11 eV; M-psi(2S)=3685.5 +/- 0.0 +/- 0.3 MeV, Gamma(tot)(psi(2S))=331 +/- 58 +/- 2 keV, and Gamma(ee)(psi(2S))=2.330 +/- 0.036 +/- 0.110 keV. We also measure the light hadron R value to be R-uds=2.262 +/- 0.054 +/- 0.109 in the energy region from 3.660 to 3.872 GeV.
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