Portal de Periódicos da CAPES

Resonances in and

2004; Elsevier BV; Volume: 607; Issue: 3-4 Linguagem: Inglês

10.1016/j.physletb.2004.12.041

1873-2445

F. De Mori, J.Z. Bai, Y. Ban, J. G. Bian, D.V. Bugg, X.D. Cai, J. F. Chang, H.F. Chen, H.S. Chen, H.X. Chen, J.C. Chen, Jin Chen, Jun Chen, M.L. Chen, Y.B. Chen, S.P. Chi, Y. P. Chu, X. Z. Cui, H. L. Dai, Y.S. Dai, Z. Y. Deng, L. Y. Dong, Qingshun Dong, S. X. Du, Z.Z. Du, J. Fang, S. S. Fang, C. D. Fu, H. Y. Fu, Chong Gao, Yuanning Gao, Ming Gong, W.X. Gong, S. Gu, Y. N. Guo, Yi-Qing Guo, Z. J. Guo, F. A. Harris, K. L. He, M. He, X. He, Y. K. Heng, H. M. Hu, J. F. Hu, G. S. Huang, X. P. Huang, Xing Huang, X. B. Ji, Cheng Jiang, X. S. Jiang, D. P. Jin, S. Jin, Y. Jin, Yi Jin, Yancheng Lai, Feiyu Li, G. Li, H.H. Li, J. Li, J.C. Li, Q.J. Li, Rui Li, S.M. Li, W.D. Li, W.G. Li, X.L. Li, X.Q. Li, Yumeng Li, Y. F. Liang, H. Liao, C.X. Liu, Feifan Liu, F. H. Liu, H.H. Liu, H.M. Liu, J. Liu, J.B. Liu, J.P. Liu, R.G. Liu, Z.A. Liu, Z.X. Liu, Fang Lu, G. R. Lu, H. J. Lü, J. G. Lu, C. L. Luo, L.X. Luo, X. L. Luo, F. C. Ma, H. L., J.M. Ma, L.L. Ma, Qiang Ma, X.B. Ma, X. Y. Ma, Z. P. Mao, X. H. Mo, J. Nie, Z. D. Nie, S. L. Olsen, H. P. Peng, N. D. Qi, C. D. Qian, H. Qin, J. F. Qiu, Z. Y. Ren, G. Rong, L.Y. Shan, L. Shang, D. L. Shen, X. Y. Shen, H. Y. Sheng, Fazhan Shi, X. Shi, H. Sun, J. F. Sun, S. Sun, Y. Z. Sun, Z. J. Sun, X. Tang, N. Tao, Y. Tian, G. Tong, G. S. Varner, D. Wang, J.Z. Wang, K. Wang, Lei Wang, L.S. Wang, Meng Wang, P. Wang, P.L. Wang, S.Z. Wang, W.F. Wang, Y. F. Wang, Zhiwei Wang, Zexiong Wang, Zhe Wang, Zheng Wang, C. Wei, D. H. Wei, Y.M. Wu, X. M. Xia, X. X. Xie, B. Xin, G. F. Xu, H. Xu, S. T. Xue, M.L. Yan, F. Yang, H. X. Yang, J. Yang, Y. Yang, M. Ye, M.H. Ye, Y.X. Ye, L. H. Yi, Z. Y. Yi, C.S. Yu, G. Yu, C. Z. Yuan, Yuan Jingming, 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. Zhang, J. W. Zhang, J.Y. Zhang, Q.J. Zhang, S.Q. Zhang, X.M. Zhang, X.Y. Zhang, Y.Y. Zhang, Yiyun Zhang, Zehui Zhang, Z.Q. Zhang, Dongxu Zhao, Jiayi Zhao, J. W. Zhao, M. Zhao, P. P. Zhao, W. R. Zhao, Xinli Zhao, Y. B. Zhao, Z. Zhao, H.Q. Zheng, J. P. Zheng, L. S. Zheng, Z. Zheng, X. Zhong, B. Zhou, G. M. Zhou, L. Zhou, Nathalie Zhou, Kejun Zhu, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, Yingchun Zhu, Z. A. Zhu, B. A. Zhuang, X.A. Zhuang, B. S. Zou,

High-Energy Particle Collisions Research

A partial wave analysis is presented of J/ψ→ϕπ+π− and ϕK+K− from a sample of 58M J/ψ events in the BES II detector. The f0(980) is observed clearly in both sets of data, and parameters of the Flatté formula are determined accurately: M=965±8(stat)±6(syst)MeV/c2, g1=165±10±15MeV/c2, g2/g1=4.21±0.25±0.21. The ϕππ data also exhibit a strong ππ peak centred at M=1335MeV/c2. It may be fitted with f2(1270) and a dominant 0+ signal made from f0(1370) interfering with a smaller f0(1500) component. There is evidence that the f0(1370) signal is resonant, from interference with f2(1270). There is also a state in ππ with M=1790−30+40MeV/c2 and Γ=270−30+60MeV/c2; spin 0 is preferred over spin 2. This state, f0(1790), is distinct from f0(1710). The ϕKK¯ data contain a strong peak due to f2′(1525). A shoulder on its upper side may be fitted by interference between f0(1500) and f0(1710).