Observation of a Charged Charmoniumlike Structure in e+e- → (D* (D)over-bar*)±π∓ at √s=4.26 GeV

被引：250

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[7
,54
]}

Albayrak, O. ^{[4
]}

Ambrose, D. J. ^{[44
]}

An, F. F. ^{[1
]}

An, Q. ^{[45
]}

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

Ferroli, R. Baldini ^{[18
]}

Ban, Y. ^{[29
]}

Becker, J. ^{[3
]}

Bennett, J. V. ^{[17
]}

Bertani, M. ^{[18
]}

Bian, J. M. ^{[43
]}

Boger, E. ^{[22
,55
]}

Bondarenko, O. ^{[23
]}

Boyko, I. ^{[22
]}

Braun, S. ^{[40
]}

Briere, R. A. ^{[4
]}

Bytev, V. ^{[22
]}

Cai, H. ^{[51
]}

Cai, X. ^{[1
]}

Cakir, O. ^{[37
]}

Calcaterra, A. ^{[18
]}

Cao, G. F. ^{[1
]}

Cetin, S. A. ^{[38
]}

Chang, J. F. ^{[1
]}

Chelkov, G. ^{[22
,55
]}

Chen, G. ^{[1
]}

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

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

Chen, M. L. ^{[1
]}

Chen, S. J. ^{[27
]}

Chen, X. R. ^{[24
]}

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

Cheng, H. P. ^{[15
]}

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

Cronin-Hennessy, D. ^{[43
]}

Dai, H. L. ^{[1
]}

Dai, J. P. ^{[1
]}

Dedovich, D. ^{[22
]}

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

Denig, A. ^{[21
]}

Denysenko, I. ^{[22
]}

Destefanis, M. ^{[48
,50
]}

Ding, W. M. ^{[31
]}

Ding, Y. ^{[25
]}

Dong, L. Y. ^{[1
]}

Dong, M. Y. ^{[1
]}

Du, S. X. ^{[53
]}

Fang, J. ^{[1
]}

机构：

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

[2] Beihang Univ, Beijing 100191, Peoples R China

[3] Ruhr Univ Bochum, D-44780 Bochum, Germany

[4] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[5] Cent China Normal Univ, Wuhan 430079, Peoples R China

[6] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China

[7] SB RAS BINP, GI Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[8] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

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

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

[11] Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China

[12] Helmholtz Inst Mainz, D-55099 Mainz, Germany

[13] Henan Normal Univ, Xinxiang 453007, Peoples R China

[14] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China

[15] Huangshan Coll, Huangshan 245000, Peoples R China

[16] Hunan Univ, Changsha 410082, Hunan, Peoples R China

[17] Indiana Univ, Bloomington, IN 47405 USA

[18] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[19] Ist Nazl Fis Nucl, I-06100 Perugia, Italy

[20] Univ Perugia, I-06100 Perugia, Italy

[21] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany

[22] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[23] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands

[24] Lanzhou Univ, Lanzhou 730000, Peoples R China

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

[26] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China

[27] Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China

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

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

[30] Seoul Natl Univ, Seoul 151747, South Korea

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

[32] Shanxi Univ, Taiyuan 030006, Peoples R China

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

[34] Soochow Univ, Suzhou 215006, Peoples R China

[35] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China

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

[37] Ankara Univ, TR-06100 Ankara, Turkey

[38] Dogus Univ, TR-34722 Istanbul, Turkey

[39] Uludag Univ, TR-16059 Bursa, Turkey

[40] Univ Giessen, D-35392 Giessen, Germany

[41] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[42] Univ Hawaii, Honolulu, HI 96822 USA

[43] Univ Minnesota, Minneapolis, MN 55455 USA

[44] Univ Rochester, Rochester, NY 14627 USA

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

[46] Univ South China, Hengyang 421001, Peoples R China

[47] Univ Punjab, Lahore 54590, Pakistan

[48] Univ Turin, I-10125 Turin, Italy

[49] Univ Piemonte Orientale, I-15121 Alessandria, Italy

[50] Ist Nazl Fis Nucl, I-10125 Turin, Italy

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 13期

基金：

美国国家科学基金会; 新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

All Open Access; Green;

D O I：

10.1103/PhysRevLett.112.132001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the process e(+)e(-) -> (D* (D) over bar*)(+/-)pi(-/+) at a center-of-mass energy of 4.26 GeV using a 827 pb(-1) data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be (137 +/- 9 +/- 15) pb. We observe a structure near the (D* (D) over bar*)(+/-) threshold in the pi(-/+) recoil mass spectrum, which we denote as the Z(c)(+/-) (4025). The measured mass and width of the structure are (4026.3 +/- 2.6 +/- 3.7) MeV/c(2) and (24.8 +/- 5.6 +/- 7.7) MeV, respectively. Its production ratio sigma(e(+)e(-) -> Z(c)(+/-)(4025)pi(-/+)-> (D* (D) over bar*)(+/-)pi(-/+)/sigma(e(+)e(-) -> (D* (D) over bar*)(+/-)pi(-/+) is determined to be 0.65 +/- 0.09 +/- 0.06. The first uncertainties are statistical and the second are systematic.

引用

页数：7

共 50 条

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Ablikim, M.
Achasov, M. N.
Albayrak, O.
Ambrose, D. J.
An, F. F.
An, Q.
Bai, J. Z.
Ferroli, R. Baldini
Ban, Y.
Becker, J.
Bennett, J. V.
Bertani, M.
Bian, J. M.
Boger, E.
Bondarenko, O.
Boyko, I.
Braun, S.
Briere, R. A.
Bytev, V.
Cai, H.
Cai, X.
Cakir, O.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chang, J. F.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, X. R.
Chen, Y. B.
Cheng, H. P.
Chu, X. K.
Chu, Y. P.
Cronin-Hennessy, D.
Dai, H. L.
Dai, J. P.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
Destefanis, M.
Ding, W. M.
Ding, Y.
Dong, L. Y.
Dong, M. Y.
Du, S. X.
PHYSICAL REVIEW LETTERS, 2014, 112 (02)
[2] Observation of a Charged Charmoniumlike Structure in e+e- → π+π- J/ψ at √s=4.26 GeV
Ablikim, M.
Achasov, M. N.
Ai, X. C.
Albayrak, O.
Ambrose, D. J.
An, F. F.
An, Q.
Bai, J. Z.
Ferroli, R. Baldini
Ban, Y.
Becker, J.
Bennett, J. V.
Bertani, M.
Bian, J. M.
Boger, E.
Bondarenko, O.
Boyko, I.
Briere, R. A.
Bytev, V.
Cai, H.
Cai, X.
Cakir, O.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chang, J. F.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, X.
Chen, Y. B.
Cheng, H. P.
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Cronin-Hennessy, D.
Dai, H. L.
Dai, J. P.
Dedovich, D.
Deng, Z. Y.
Denig, A.
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Destefanis, M.
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PHYSICAL REVIEW LETTERS, 2013, 110 (25)
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Ablikim, M.
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Albayrak, O.
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Ambrose, D. J.
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