Measurements Of The Branching Fractions For Psi(3770)-> D-0(D)Over-Bar-(0), D+D-, D(D)Over-Bar, And The Resonance Parameters Of Psi(3770) And Psi(2s)

M. Ablikim,J. Bai,Y. Ban,J. Bian,X. Cai,H. Chen,J. Chen, Jin Chen,Y. Chen,S. Chi,Y. Chu,X. Cui,Y. Dai,Z. Deng,L. Dong,Q. Dong,S. Du,Z. Du,J. Fang,S. Fang,C. Fu,C. Gao,Y. Gao,S. Gu,Y. Gu,Y. Guo,K. He,M. He,Y. Heng,H. Hu,T. Hu,X. Huang,X. Ji,X. Jiang,J. Jiao,D. Jin,S. Jin,Yi Jin,Y. Lai,G. Li,H. Li,J. Li,R. Li,S. Li,W. Li,X. Li,Y. Li,Y. Liang,H. Liao,C. Liu,F. Liu,Fang Liu,H. Liu,J. Liu,R. Liu,Z. Liu,F. Lu,G. Lu,H. Lu,J. Lu,C. Luo,F. Ma,H. Ma,L. Ma,Q. Ma,X. Ma,Z. Mao,X. Mo,J. Nie,H. Peng,N. Qi,H. Qin,J. Qiu,Z. Ren,G. Rong,L. Shan,L. Shang,D. Shen,X. Shen,H. Sheng,F. Shi,X. Shi,H. Sun,J. Sun,S. Sun,Y. Sun,Z. Sun,Z. Tan,X. Tang,Y. Tian,G. Tong,D. Wang,L. Wang,M. Wang,P. Wang,W. Wang,Y. Wang,Z. Wang, Zhe Wang,Zheng Wang,C. Wei,D. Wei,N. Wu,X. Xia,X. Xie,B. Xin,G. Xu,Y. Xu,M. Yan,F. Yang,H. Yang,J. Yang,Y. Yang,M. Ye,Y. Ye,Z. Yi,G. Yu,C. Yuan,J. Yuan,Y. Yuan,S. Zang,Y. Zeng,Yu Zeng,B. Zhang,C. Zhang,D. Zhang,H. Zhang,J. Zhang,Q. Zhang,X. Zhang,Yiyun Zhang,Z. Zhang,D. Zhao,J. Zhao,M. Zhao,P. Zhao,W. Zhao,H. Zheng,J. Zheng,Z. Zheng,L. Zhou,N. Zhou,K. Zhu,Q. Zhu,Y. Zhu,Yingchun Zhu,Z. Zhu,B. Zhuang,X. Zhuang,B. Zou

PHYSICAL REVIEW LETTERS（2006）

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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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