1. R value measurements for e+e− annihilation at 2.60, 3.07 and 3.65 GeV
- Author
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H. Y. Zhang, R. Y. Li, Haiwen Liu, G. S. Huang, Cunfeng Wei, J. W. Zhang, J. Y. Zhang, B. J. Liu, Yudan Wang, Xiaobo Zhu, Gongru Lu, Z. A. Zhu, Y. K. Heng, Z. P. Zheng, Feng Liu, P. Wang, G. L. Tong, B. A. Zhuang, Chunxu Yu, P. P. Zhao, J. G. Lu, N. Wu, H. X. Yang, Z. Y. Wang, C. P. Shen, H. B. Li, L. P. Zhou, R. G. Liu, K. J. Zhu, S. X. Du, M. L. Yan, Z. P. Mao, Y. X. Yang, H. B. Liu, J. Nie, M. Ablikim, J. P. Liu, Y.Y. Zhang, W. D. Li, T. Hu, G. Rong, X. Wan, L. S. Wang, M. G. Zhao, C. L. Luo, J. P. Tian, P. L. Wang, XZ(蔡翔舟) Cai, Zhengguo Zhao, S. S. Sun, X. L. Li, Z. A. Liu, X. S. Jiang, Y. S. Dai, Zhenyu Zhang, Z.J. Guo, X. Tang, C. S. Gao, Xuan Zhang, Jinxing Zheng, F. Lu, C. C. Zhang, B. Zhong, Lei Li, W. G. Li, S.L. Olsen, Y. Ban, X. Y. Shen, J. B. Jiao, Qian Liu, Junhui Hu, J. W. Zhao, Lianyou Shan, Y. Z. Sun, F. A. Harris, J. C. Chen, Y. P. Chu, H. M. Hu, X. P. Xu, X. B. Ji, F. C. Ma, J. Z. Bai, Yin Xu, J. Fang, X. Q. Li, Z. X. Zhang, Yanping Huang, S. D. Gu, C. Z. Yuan, Y. Weng, J. F. Qiu, Yi Jin, Y.N. Gao, Z.L. Zhu, M. Q. A. Malik, Q. M. Ma, X. D. Chen, H. Y. Sheng, Shang Lunlin, N. D. Qi, G. Li, Y. N. Guo, H. L. Ma, Xifeng Ruan, Fang Liu, B. Zheng, R. G. Ping, H.Q. Zheng, Y. Q. Guo, C. D. Fu, Y. Yuan, Y. S. Zhu, G. S. Varner, D. X. Zhao, B. Y. Zhang, Hangxu Li, Z. Y. Deng, Y. B. Chen, Mingming Yang, Y. F. Liang, Y. X. Ye, H. F. Chen, D. P. Jin, D. H. Zhang, Yu Bai, Z. J. Sun, Q. M. Zhu, Xingtao Huang, H. S. Sun, X. N. Li, Jin Chen, J. C. Li, M. He, Y. Zeng, C. X. Liu, H. S. Chen, X. M. Xia, K. L. He, G. F. Xu, S. Jin, B. X. Zhang, Huirun Chen, X. H. Mo, M. H. Ye, L. L. Wang, Y. T. Gu, D. H. Wei, S. Liu, B.S. Zou, H. Q. Zhang, and Zujian Wang
- Subjects
Coupling constant ,Physics ,Nuclear physics ,Systematic error ,Nuclear and High Energy Physics ,Particle physics ,Annihilation ,Luminosity (scattering theory) ,Electron–positron annihilation ,Strong interaction ,Hadron ,R-value (insulation) - Abstract
Using a data sample with a total integrated luminosity of 10.0 pb −1 collected at center-of-mass energies of 2.6, 3.07 and 3.65 GeV with BESII, cross sections for e + e − annihilation into hadronic final states ( R values) are measured with statistical errors that are smaller than 1%, and systematic errors that are about 3.5 % . The running strong interaction coupling constants α s ( 3 ) ( s ) and α s ( 5 ) ( M Z 2 ) are determined from the R values.
- Published
- 2009