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Anomalous line shape of the cross section for e+e-→ hadrons in the center-of-mass energy region between 3.650 and 3.872 GeV

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成果类型:
期刊论文
作者:
Ablikim, M.*;Bai, J. Z.;Ban, Y.;Cai, X.;Chen, H. F.;...
通讯作者:
Ablikim, M.
作者机构:
[Zhuang, X. A.; Chen, H. X.; Mao, Z. P.; Sun, H. S.; Gao, C. S.; Guo, Y. N.; Liao, H. B.; Lu, J. G.; Sun, S. S.; Chen, Y. B.; Zhao, D. X.; Gu, S. D.; Hu, T.; Xia, X. M.; Zhao, M. G.; Wang, Z.; Zhang, B. X.; Liu, Fang; Sun, Z. J.; Liu, J. B.; Zhang, C. C.; Li, W. G.; Mo, X. H.; Zheng, Z. P.; Zhu, Y. C.; Zhou, L.; Qi, N. D.; Zhang, D. H.; Fang, J.; Li, J.; Xie, X. X.; Yuan, C. Z.; Li, R. Y.; Shen, X. Y.; Zheng, J. P.; Zhu, Y. S.; Zang, S. L.; Xu, X. P.; Li, X. N.; Zhang, B. Y.; Jiang, X. S.; Zhang, H. Y.; Wang, L.; Liu, R. G.; Hu, H. M.; Liu, Jian; Wang, P. L.; Tong, G. L.; Zhang, H. Q.; Zhu, Z. A.; Xu, G. F.; Zhao, W. R.; Huang, G. S.; Lu, F.; Heng, Y. K.; Nie, J.; Zhang, J. W.; Rong, G.; Yuan, Y.; Wang, D. Y.; Li, X. L.; Chu, Y. P.; Sun, Y. Z.; Liu, B. J.; Wang, Zheng; Zhao, P. P.; Zhu, Q. M.; Wang, Y. F.; Wei, C. L.; Zhu, K. J.; Liu, H. M.; Li, H. B.; Li, X. Q.; Ma, H. L.; Wang, L. L.; Wei, D. H.; Jin, D. P.; Wang, W. F.; Chen, Jin; Sheng, H. Y.; Xu, Y.; Zhang, S. H.; Wang, M.; Zhang, J. Y.; Zou, B. S.; Chen, H. S.; Qin, H.; Ji, X. B.; Wang, L. S.; Shang, L.; Weng, Y.; Shan, L. Y.; Jin, S.; Wang, P.; Deng, Z. Y.; Ma, Q. M.; Tang, X.; Fang, S. S.; Yang, H. X.; Ren, Z. Y.; Wang, Z. Y.; Liu, Z. A.; Li, G.; Li, S. M.; Cai, X.; He, K. L.; Ping, R. G.; Qiu, J. F.; Yu, G. W.; Zhuang, B. A.; Ma, L. L.; Zhao, J. W.; Chen, J. C.; Liu, Q.; Ablikim, M.; Liu, C. X.; Zhao, Z. G.; Wu, N.; Lai, Y. F.; Liu, H. H.; Li, W. D.; Shen, D. L.; Bai, J. Z.; Du, S. X.] Inst High Energy Phys, Beijing 100049, Peoples R China.
[Ye, M. H.] China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China.
[Yang, Y. X.; Hu, J. H.] Guangxi Normal Univ, Guilin 541004, Peoples R China.
[Ruan, X. D.; Gu, Y. T.] Guangxi Univ, Nanning 530004, Peoples R China.
[Jiang, X. Y.; Lu, G. R.; Lou, Y. C.] Henan Normal Univ, Xinxiang 453002, Peoples R China.
通讯机构:
[Ablikim, M.] I
Inst High Energy Phys, Beijing 100049, Peoples R China.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2008
卷:
101
期:
10
页码:
102004
基金类别:
National Natural Science Foundation of China [19991480, 10225524, 10225525, 10175060, 10225522]; Chinese Academy of Sciences [KJ 95T-03]; 100 Talents Program of CAS [U-11, U-24, U-25]; Knowledge Innovation Project of CAS [U-602, U-34]
机构署名:
本校为其他机构
摘要:
We observe an obvious anomalous line shape of the e+e-→ hadrons total cross sections in the energy region between 3.700 and 3.872 GeV. It is inconsistent with the explanation for only one simple ψ(3770) resonance with a statistical significance of 7σ. 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 and 3.779 GeV, indicating that either there is likely a new structure in addition to the ψ(3770) resonance around 3.773 GeV, or there are some physics effects reflecting...

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