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

被引：40

作者：

Ablikim, M. ^{[1
]}

Bai, J. Z. ^{[1
]}

Ban, Y. ^{[11
]}

Cai, X. ^{[1
]}

Chen, H. F. ^{[15
]}

Chen, H. S. ^{[1
]}

Chen, H. X. ^{[1
]}

Chen, J. C. ^{[1
]}

Chen, Jin ^{[1
]}

Chen, Y. B. ^{[1
]}

Chu, Y. P. ^{[1
]}

Dai, Y. S. ^{[17
]}

Diao, L. Y. ^{[8
]}

Deng, Z. Y. ^{[1
]}

Dong, Q. F. ^{[14
]}

Du, S. X. ^{[1
]}

Fang, J. ^{[1
]}

Fang, S. S. ^{[1
]}

Fu, C. D. ^{[14
]}

Gao, C. S. ^{[1
]}

Gao, Y. N. ^{[14
]}

Gu, S. D. ^{[1
]}

Gu, Y. T. ^{[4
]}

Guo, Y. N. ^{[1
]}

He, K. L. ^{[1
]}

He, M. ^{[12
]}

Heng, Y. K. ^{[1
]}

Hou, J. ^{[10
]}

Hu, H. M. ^{[1
]}

Hu, J. H. ^{[3
]}

Hu, T. ^{[1
]}

Huang, G. S. ^{[1
]}

Huang, X. T. ^{[12
]}

Ji, X. B. ^{[1
]}

Jiang, X. S. ^{[1
]}

Jiang, X. Y. ^{[5
]}

Jiao, J. B. ^{[12
]}

Jin, D. P. ^{[1
]}

Jin, S. ^{[1
]}

Lai, Y. F. ^{[1
]}

Li, G. ^{[1
]}

Li, H. B. ^{[1
]}

Li, J. ^{[1
]}

Li, R. Y. ^{[1
]}

Li, S. M. ^{[1
]}

Li, W. D. ^{[1
]}

Li, W. G. ^{[1
]}

Li, X. L. ^{[1
]}

Li, X. N. ^{[1
]}

Li, X. Q. ^{[1
,10
]}

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China

[3] Guangxi Normal Univ, Guilin 541004, Peoples R China

[4] Guangxi Univ, Nanning 530004, Peoples R China

[5] Henan Normal Univ, Xinxiang 453002, Peoples R China

[6] Huazhong Normal Univ, Wuhan 430079, Peoples R China

[7] Hunan Univ, Changsha, Hunan, Peoples R China

[8] Liaoning Univ, Shenyang 110036, Peoples R China

[9] Nanjing Normal Univ, Nanjing 210097, Peoples R China

[10] Nankai Univ, Tianjin 300071, Peoples R China

[11] Peking Univ, Beijing 100871, Peoples R China

[12] Shandong Univ, Jinan 250100, Peoples R China

[13] Sichuan Univ, Chengdu 610064, Peoples R China

[14] Tsinghua Univ, Beijing 100084, Peoples R China

[15] Univ Sci & Technol China, Hefei 230026, Peoples R China

[16] Wuhan Univ, Wuhan 430072, Peoples R China

[17] Zhejiang Univ, Hangzhou 310028, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 10期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevLett.101.102004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 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 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 (D) over bar production dynamics.

引用

页数：5

共 22 条

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Bai, J. Z.
Ban, Y.
Cai, X.
Chen, H. F.
Chen, H. S.
Chen, H. X.
Chen, J. C.
Chen, Jin
Chen, Y. B.
Chu, Y. P.
Dai, Y. S.
Diao, L. Y.
Deng, Z. Y.
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Gu, Y. T.
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Jiang, X. S.
Jiang, X. Y.
Jiao, J. B.
Jin, D. P.
Jin, S.
Lai, Y. F.
Li, G.
Li, H. B.
Li, J.
Li, R. Y.
Li, S. M.
Li, W. D.
Li, W. G.
Li, X. L.
Li, X. N.
Li, X. Q.
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Li, R. Y.
Li, S. M.
Li, W. D.
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Gao, Y. N.
Gu, S. D.
Gu, Y. T.
Guo, Y. N.
Guo, Y. Q.
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Heng, Y. K.
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Huang, X. T.
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Jiang, X. S.
Jiao, J. B.
Jin, D. P.
Jin, S.
Jin, Yi
Lai, Y. F.
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Li, H. B.
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Li, R. Y.
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