| Preprint | |
| Report number | arXiv:0807.0494 |
| Title | Anomalous Line-Shape of Cross Sections for $e^+e^- \to {\rm Hadrons}$ in the Center-of-Mass Energy Region between 3.650 and 3.872 GeV |
| Author(s) |
Ablikim, M. (Beijing, Inst. High Energy Phys.) ; Bai, J.Z. (Beijing, Inst. High Energy Phys.) ; Ban, Y. (Peking U.) ; Cai, X. (Beijing, Inst. High Energy Phys.) ; Chen, H.F. (Hefei, CUST) ; Chen, H.S. (Beijing, Inst. High Energy Phys.) ; Chen, H.X. (Beijing, Inst. High Energy Phys.) ; Chen, J.C. (Beijing, Inst. High Energy Phys.) ; Chen, Jin (Beijing, Inst. High Energy Phys.) ; Chen, Y.B. (Beijing, Inst. High Energy Phys.) ; Chu, Y.P. (Beijing, Inst. High Energy Phys.) ; Dai, Y.S. (Zhejiang U.) ; Diao, L.Y. (Liaoning U.) ; Deng, Z.Y. (Beijing, Inst. High Energy Phys.) ; Dong, Q.F. (Tsinghua U., Beijing) ; Du, S.X. (Beijing, Inst. High Energy Phys.) ; Fang, J. (Beijing, Inst. High Energy Phys.) ; Fang, S.S. (Beijing, Inst. High Energy Phys. ; DESY) ; Fu, C.D. (Tsinghua U., Beijing) ; Gao, C.S. (Beijing, Inst. High Energy Phys.) ; Gao, Y.N. (Tsinghua U., Beijing) ; Gu, S.D. (Beijing, Inst. High Energy Phys.) ; Gu, Y.T. (Guangxi U.) ; Guo, Y.N. (Beijing, Inst. High Energy Phys.) ; He, K.L. (Beijing, Inst. High Energy Phys.) ; He, M. (Shandong U.) ; Heng, Y.K. (Beijing, Inst. High Energy Phys.) ; Hou, J. (Nankai U.) ; Hu, H.M. (Beijing, Inst. High Energy Phys.) ; Hu, J.H. (Guangxi Normal U.) ; Hu, T. (Beijing, Inst. High Energy Phys.) ; Huang, G.S. (Beijing, Inst. High Energy Phys. ; Oklahoma U.) ; Huang, X.T. (Shandong U.) ; Ji, X.B. (Beijing, Inst. High Energy Phys.) ; Jiang, X.S. (Beijing, Inst. High Energy Phys.) ; Jiang, X.Y. (Henan Normal U.) ; Jiao, J.B. (Shandong U.) ; Jin, D.P. (Beijing, Inst. High Energy Phys.) ; Jin, S. (Beijing, Inst. High Energy Phys.) ; Lai, Y.F. (Beijing, Inst. High Energy Phys.) ; Li, G. (Beijing, Inst. High Energy Phys. ; Orsay, LAL) ; Li, H.B. (Beijing, Inst. High Energy Phys.) ; Li, J. (Beijing, Inst. High Energy Phys.) ; Li, R.Y. (Beijing, Inst. High Energy Phys.) ; Li, S.M. (Beijing, Inst. High Energy Phys.) ; Li, W.D. (Beijing, Inst. High Energy Phys.) ; Li, W.G. (Beijing, Inst. High Energy Phys.) ; Li, X.L. (Beijing, Inst. High Energy Phys.) ; Li, X.N. (Beijing, Inst. High Energy Phys.) ; Li, X.Q. (Nankai U.) ; Liang, Y.F. (Sichuan U.) ; Liao, H.B. (Beijing, Inst. High Energy Phys.) ; Liu, B.J. (Beijing, Inst. High Energy Phys.) ; Liu, C.X. (Beijing, Inst. High Energy Phys.) ; Liu, F. (Hua-Zhong Normal U.) ; Liu, Fang (Beijing, Inst. High Energy Phys.) ; Liu, H.H. (Beijing, Inst. High Energy Phys.) ; Liu, H.M. (Beijing, Inst. High Energy Phys.) ; Liu, J. (Peking U. ; Munich, Max Planck Inst.) ; Liu, J.B. (Beijing, Inst. High Energy Phys.) ; Liu, J.P. (Wuhan U.) ; Liu, Jian (Beijing, Inst. High Energy Phys.) ; Liu, Q. (Beijing, Inst. High Energy Phys.) ; Liu, R.G. (Beijing, Inst. High Energy Phys.) ; Liu, Z.A. (Beijing, Inst. High Energy Phys.) ; Lou, Y.C. (Henan Normal U.) ; Lu, F. (Beijing, Inst. High Energy Phys.) ; Lu, G.R. (Henan Normal U.) ; Lu, J.G. (Beijing, Inst. High Energy Phys.) ; Luo, C.L. (Nanjing Normal U., Sch. Phys. Sci. Technol.) ; Ma, F.C. (Liaoning U.) ; Ma, H.L. (CCAST World Lab, Beijing) ; Ma, L.L. (Beijing, Inst. High Energy Phys. ; Toronto U.) ; Ma, Q.M. (Beijing, Inst. High Energy Phys.) ; Mao, Z.P. (Beijing, Inst. High Energy Phys.) ; Mo, X.H. (Beijing, Inst. High Energy Phys.) ; Nie, J. (Beijing, Inst. High Energy Phys.) ; Ping, R.G. (Beijing, Inst. High Energy Phys.) ; Qi, N.D. (Beijing, Inst. High Energy Phys.) ; Qin, H. (Beijing, Inst. High Energy Phys.) ; Qiu, J.F. (Beijing, Inst. High Energy Phys.) ; Ren, Z.Y. (Beijing, Inst. High Energy Phys.) ; Rong, G. (Beijing, Inst. High Energy Phys.) ; Ruan, X.D. (Guangxi U.) ; Shan, L.Y. (Beijing, Inst. High Energy Phys.) ; Shang, L. (Beijing, Inst. High Energy Phys.) ; Shen, D.L. (Beijing, Inst. High Energy Phys.) ; Shen, X.Y. (Beijing, Inst. High Energy Phys.) ; Sheng, H.Y. (Beijing, Inst. High Energy Phys.) ; Sun, H.S. (Beijing, Inst. High Energy Phys.) ; Sun, S.S. (Beijing, Inst. High Energy Phys.) ; Sun, Y.Z. (Beijing, Inst. High Energy Phys.) ; Sun, Z.J. (Beijing, Inst. High Energy Phys.) ; Tang, X. (Beijing, Inst. High Energy Phys.) ; Tong, G.L. (Beijing, Inst. High Energy Phys.) ; Wang, D.Y. (Beijing, Inst. High Energy Phys. ; CERN) ; Wang, L. (Beijing, Inst. High Energy Phys.) ; Wang, L.L. (Beijing, Inst. High Energy Phys.) ; Wang, L.S. (Beijing, Inst. High Energy Phys.) ; Wang, M. (Beijing, Inst. High Energy Phys.) ; Wang, P. (Beijing, Inst. High Energy Phys.) ; Wang, P.L. (Beijing, Inst. High Energy Phys.) ; Wang, W.F. (Beijing, Inst. High Energy Phys. ; Orsay, LAL) ; Wang, Y.F. (Beijing, Inst. High Energy Phys.) ; Wang, Z. (Beijing, Inst. High Energy Phys.) ; Wang, Z.Y. (Beijing, Inst. High Energy Phys.) ; Wang, Zheng (Beijing, Inst. High Energy Phys.) ; Wei, C.L. (Beijing, Inst. High Energy Phys.) ; Wei, D.H. (Beijing, Inst. High Energy Phys.) ; Weng, Y. (Beijing, Inst. High Energy Phys.) ; Wu, N. (Beijing, Inst. High Energy Phys.) ; Xia, X.M. (Beijing, Inst. High Energy Phys.) ; Xie, X.X. (Beijing, Inst. High Energy Phys.) ; Xu, G.F. (Beijing, Inst. High Energy Phys.) ; Xu, X.P. (Hua-Zhong Normal U.) ; Xu, Y. (Nankai U.) ; Yan, M.L. (Hefei, CUST) ; Yang, H.X. (Beijing, Inst. High Energy Phys.) ; Yang, Y.X. (Guangxi Normal U.) ; Ye, M.H. (CCAST World Lab, Beijing) ; Ye, Y.X. (Hefei, CUST) ; Yu, G.W. (Beijing, Inst. High Energy Phys.) ; Yuan, C.Z. (Beijing, Inst. High Energy Phys.) ; Yuan, Y. (Beijing, Inst. High Energy Phys.) ; Zang, S.L. (Beijing, Inst. High Energy Phys.) ; Zeng, Y. (Hunan U.) ; Zhang, B.X. (Beijing, Inst. High Energy Phys.) ; Zhang, B.Y. (Beijing, Inst. High Energy Phys.) ; Zhang, C.C. (Beijing, Inst. High Energy Phys.) ; Zhang, D.H. (Beijing, Inst. High Energy Phys.) ; Zhang, H.Q. (Beijing, Inst. High Energy Phys.) ; Zhang, H.Y. (Beijing, Inst. High Energy Phys.) ; Zhang, J.W. (Beijing, Inst. High Energy Phys.) ; Zhang, J.Y. (Beijing, Inst. High Energy Phys.) ; Zhang, S.H. (Beijing, Inst. High Energy Phys.) ; Zhang, X.Y. (Shandong U.) ; Zhang, Yiyun (Sichuan U.) ; Zhang, Z.X. (Peking U.) ; Zhang, Z.P. (Hefei, CUST) ; Zhao, D.X. (Beijing, Inst. High Energy Phys.) ; Zhao, J.W. (Beijing, Inst. High Energy Phys.) ; Zhao, M.G. (Beijing, Inst. High Energy Phys.) ; Zhao, P.P. (Beijing, Inst. High Energy Phys.) ; Zhao, W.R. (Beijing, Inst. High Energy Phys.) ; Zhao, Z.G. (Beijing, Inst. High Energy Phys. ; Michigan U.) ; Zheng, H.Q. (Peking U.) ; Zheng, J.P. (Beijing, Inst. High Energy Phys.) ; Zheng, Z.P. (Beijing, Inst. High Energy Phys.) ; Zhou, L. (Beijing, Inst. High Energy Phys.) ; Zhu, K.J. (Beijing, Inst. High Energy Phys.) ; Zhu, Q.M. (Beijing, Inst. High Energy Phys.) ; Zhu, Y.C. (Beijing, Inst. High Energy Phys.) ; Zhu, Y.S. (Beijing, Inst. High Energy Phys.) ; Zhu, Z.A. (Beijing, Inst. High Energy Phys.) ; Zhuang, B.A. (Beijing, Inst. High Energy Phys.) ; Zhuang, X.A. (Beijing, Inst. High Energy Phys.) ; Zou, B.S. (Beijing, Inst. High Energy Phys.) |
| Publication | 2008 |
| Imprint | 04 Jul 2008 |
| Number of pages | 6 |
| Note | Comments: 6 pages, 3figures 6 pages, 3figures |
| Subject category | hep-ex |
| Abstract | We observe an obvious anomalous line-shape of the $e^+e^- \to {\rm hadrons}$ total cross sections in the energy region between 3.700 and 3.872 GeV from the data samples taken with the BES-II detector at the BEPC Collider. Re-analysis of the data shows that it is inconsistent with the explanation for only one simple $\psi(3770)$ resonance with a statistical significance of $7\sigma$. The anomalous line-shape may be explained by two possible enhancements of the inclusive hadron production near the center-of-mass energies of 3.764 GeV and 3.779 GeV, indicating that either there is likely a new structure in addition to the $\psi(3770)$ resonance around 3.773 GeV, or there are some physics effects reflecting the $D\bar D$ production dynamics. |
| Other source | Inspire |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 |
Notice créée le 2008-07-04, modifiée le 2021-12-24
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