Measurements Of The Line Shapes Of D(D)Over-Bar Production And The Ratio Of The Production Rates Of D+D- And D-0(D)Over-Bar(0) In E(+)E(-) Annihilation At Psi (3770) Resonance

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

PHYSICS LETTERS B（2008）

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摘要

We report measurements of the line shapes of D+D-, D-0(D) over bar (0) and D (D) over bar production as well as the line shape of the ratio of the production rates of D+D- and D-0(D) over bar (0) in e(+)e(-) annihilation at psi(3770) resonance. We find that the line shapes of D+D-, D-0(D) over bar (0) and D (D) over bar production are similar to an anomalous line shape of cross sections for e(+)e(-) -> hadrons observed in the center-of-mass energy range from 3.70 to 3.87 GeV. (C) 2008 Published by Elsevier B.V.

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