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Observation of a Neutral Structure near the D D ¯ ∗ Mass Threshold in e+e- → (D D ¯ ∗)0π0 at s =4.226 and 4.257 GeV

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成果类型:
期刊论文
作者:
Ablikim, M.*;Achasov, M. N.;Ai, X. C.;Albayrak, O.;Albrecht, M.;...
通讯作者:
Ablikim, M.
作者机构:
[Yu, B. X.; Achasov, M. N.; Hu, T.; Sun, Z. J.; Guo, R. P.; Ning, Z.; Wen, S. P.; Sun, G. X.; Ma, M. M.; Min, J.; Zhao, Ling; Ai, X. C.; Nikolaev, I. B.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Amoroso, A.; Rong, G.; Li, H. J.; Wang, Y. F.; Wang, L. L.; Jin, D. P.; Xiu, Q. L.; Zheng, B.; Lu, Y.; Varner, G. S.; Ouyang, Q.; Ji, X. B.; Zhang, J. Q.; Qian, S.; Wang, P.; Dong, M. Y.; Prasad, V.; Fang, S. S.; Liu, Z. A.; Sun, S. S.; Fu, C. D.; Zhang, Y.; Denig, A.; Lou, X. C.; Wang, Z. G.; Zhang, B. X.; Sun, X. H.; Dbeyssi, A.; Xu, J. J.; Wu, L. H.; Zhao, Y. B.; Gao, Q.; Zallo, A.; Zheng, J. P.; Zhang, B. Y.; Jiang, X. S.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhao, G.; Wu, L. J.; Shi, M.; Yuan, Y.; Wu, Z.; Fang, Y.; Luo, X. L.; Chelkov, G.; Kopf, B.; Ji, X. L.; Li, H. B.; Zhuang, J.; Li, J. C.; Guo, A. Q.; Fioravanti, E.; Zhang, J. Y.; Guo, Y.; Wang, L. S.; Yin, J. H.; Jin, S.; Song, W. M.; Zhang, J. Z.; He, K. L.; Chen, G.; Chen, J. C.; Ablikim, M.; Liu, C. X.; Savrie, M.; Kavatsyuk, M.; Zhu, K.; Qin, X. S.; Liu, H. H.; Zafar, A. A.; Wang, W.; Bai, J. Z.; Zhao, J. Z.; Kupsc, A.; Mao, Z. P.; Zhao, Q.; Fava, L.; Lu, J. G.; Liu, P. L.; Kloss, B.; Chen, Y. B.; Niu, S. L.; Liu, J.; Wang, Z.; Liu, Fang; Zhao, J. Y.; Dong, J.; Zhang, C. C.; Zhang, D. H.; Zhemchugov, A.; Guan, Y. H.; Yuan, C. Z.; Zhang, H. Y.; Chen, M. L.; Ma, T.; Hafner, A.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Zhu, K. J.; Liu, H. M.; Ma, H. L.; Dedovich, D.; Ye, M.; Xie, Y. G.; Sheng, H. Y.; Song, X. Y.; Zou, B. S.; Chen, H. S.; Calcaterra, A.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Zhao, T. C.; Zhao, Q. W.; Cai, X.; Xu, L.; Julin, A.; Zhang, Y. H.; Zhu, S.; An, F. F.; Zou, J. H.; Zhang, J. L.; Liu, J. Y.; Li, W. G.; Niu, X. Y.; Mo, X. H.; Zhong, B.; Zhou, L.; Fang, J.; Yuncu, A.; Shen, X. Y.; Zhu, Y. S.; Li, X. N.; Sun, Z. T.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Wang, P. L.; Zhang, J.; Duan, P. F.; Hu, Y.; Wang, B.; Kang, X. L.; Zhang, L.; Bennett, J. V.; Li, F.; Zhang, K.; Zhou, X. Y.; Tang, X.; Chen, X.; Yang, H. X.; Qin, Z. H.; Xiao, D.; Li, G.; Ping, R. G.; Sarantsev, A.; Qiu, J. F.; Zhao, J. W.; Zhang, J. J.; Dai, H. L.; Li, W. D.] Inst High Energy Phys, Beijing 100049, Peoples R China.
[Chen, H. Y.; Shen, C. P.; Gao, X. Y.] Beihang Univ, Beijing 100191, Peoples R China.
[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.
[Pelizaeus, M.; Kopf, B.; Albrecht, M.; Wiedner, U.; Held, T.] Ruhr Univ Bochum, D-44780 Bochum, Germany.
[Ke, B. C.; Briere, R. A.; Albayrak, O.; Bennett, J. V.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
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:
2015
卷:
115
期:
22
页码:
222002
基金类别:
National Key Basic Research Program of ChinaNational Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [11125525, 11235011, 11322544, 11335008, 11425524]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility ProgramChinese Academy of Sciences; CAS Center for Excellence in Particle Physics (CCEPP); Collaborative Innovation Center for Particles and Interactions (CICPI); NSFCNational Natural Science Foundation of China (NSFC); CASChinese Academy of Sciences [11179007, U1232201, U1332201, KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CASChinese Academy of Sciences; National 1000 Talents Program of China; German Research Foundation DFGGerman Research Foundation (DFG) [Collaborative Research Center CRC-1044]; INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; Istituto Nazionale di Fisica Nucleare, ItalyIstituto Nazionale di Fisica Nucleare (INFN); Ministry of Development of TurkeyTurkiye Cumhuriyeti Kalkinma Bakanligi [DPT2006K-120470]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [14-07-91152]; Swedish Research CouncilSwedish Research CouncilEuropean Commission; U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-SC0012069, DESC0010118]; U.S. National Science FoundationNational Science Foundation (NSF); University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI); Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0]
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本校为其他机构
摘要:
A neutral structure in the DD¯∗ system around the DD¯∗ mass threshold is observed with a statistical significance greater than 10σ in the processes e+e-→D+D∗-π0+c.c. and e+e-→D0D¯∗0π0+c.c. at s=4.226 and 4.257 GeV in the BESIII experiment. The structure is denoted as Zc(3885)0. Assuming the presence of a resonance, its pole mass and width are determined to be [3885.7-5.7+4.3(stat)±8.4(syst)] MeV/c2 and [35-12+11(stat)±15(syst)] MeV, respectively. The Born cross sections are measured to be σ[e+e-→Zc(3885)0π0,Zc(3885)0→DD¯∗]=[...

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