Observation of a Near-Threshold Structure in the K+ Recoil-Mass Spectra in e+e- →k+ (Ds- D∗0+ Ds∗- D0)

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成果类型：

期刊论文

作者：

Ablikim, M.*;Achasov, M. N.;Adlarson, P.;Ahmed, S.;Albrecht, M.;...

通讯作者：

Ablikim, M.

作者机构：

[Yu, B. X.; Dai, X. C.; Yu, G.; Hu, T.; Ning, Z.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Zhou, Q.; Wang, Y. F.; Wang, L. L.; Lu, Y.; Ouyang, Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Wang, Zongyuan; Liu, Z. A.; Ke, B. C.; Wu, J. F.; Sun, S. S.; Fu, C. D.; Lou, X. C.; Zhang, B. X.; Fu, Y.; Xing, T. Y.; Cao, G. F.; Xiao, Y. J.; Wu, L. H.; Zhao, Y. B.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Yang, S. L.; Zhao, G.; Wu, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhu, A. N.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Liao, L. Z.; Zhang, J. Y.; Yin, J. H.; Liu, Huanhuan; Song, W. M.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Kurth, M. G.; Zhao, J. Z.; Mao, Z. P.; Zhao, Q.; Xiao, S. Y.; Lu, J. G.; Sun, H. K.; Chen, Y. B.; Wang, Z.; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Zhang, H. Y.; Chen, M. L.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Lu, J. D.; Zou, B. S.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Ma, X. X.; Shen, X. Y.; Sun, Z. T.; Liu, T.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, Meng; Zhang, Jianyu; Li, F.; Pathak, A.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.] Inst High Energy Phys, Beijing 100049, Peoples R China.

[Gu, S.; Yuan, L.; Qi, T. Y.] Beihang Univ, Beijing 100191, Peoples R China.

[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.

[Jaeger, S.; Fritsch, M.; Heinsius, F. H.; Zhang, J. Q.; Kuessner, M.; Pitka, A.; Pelizaeus, M.; Kopf, B.; Keshk, I. K.; Wollenberg, L.; Albrecht, M.; Holtmann, T.; Schnier, C.; Feldbauer, F.; Wiedner, U.; de Boer, R. B.; Kuemmel, M.; Li, J. Q.; Held, T.] Bochum Ruhr Univ, D-44780 Bochum, Germany.

[Briere, R. A.] 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：

2021

卷：

126

期：

页码：

102001

DOI：

10.1103/PhysRevLett.126.102001

基金类别：

National Key Basic Research Program of ChinaNational Basic Research Program of China [2015CB856700]; National Key Research and Development Program of China [2020YFA0406300, 2020YFA0406400]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [11625523, 11635010, 11735014, 11805086, 11822506, 11835012, 11935015, 11935016, 11935018, 11961141012]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility ProgramChinese Academy of Sciences; CAS PIFI program; NSFCNational Natural Science Foundation of China (NSFC) [U1732263, U1832207]; CASChinese Academy of Sciences [U1732263, U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CASChinese Academy of Sciences; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities; INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; ERCEuropean Research Council (ERC)European Commission [758462]; German Research Foundation DFGGerman Research Foundation (DFG) [443159800]; Collaborative Research Center CRC 1044; Collaborative Research Center FOR 2359; Collaborative Research Center GRK 2149; Istituto Nazionale di Fisica Nucleare, ItalyIstituto Nazionale di Fisica Nucleare (INFN); Ministry of Development of TurkeyTurkiye Cumhuriyeti Kalkinma Bakanligi [DPT2006K120470]; National Science and Technology fund; Olle Engkvist Foundation [200-0605]; STFC (United Kingdom)UK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg Foundation (Sweden)Knut & Alice Wallenberg Foundation [2016.0157]; Royal Society, UKRoyal Society of London [DH140054, DH160214]; Swedish Research CouncilSwedish Research CouncilEuropean Commission; U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-FG0205ER41374, DE-SC-0012069.]

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摘要：

We report a study of the processes of e(+)e(-) -> K+Ds- D*(0) and K+Ds* D-0 based on e(+)e(-) annihilation samples collected with the BESIII detector operating at BEPCII at five center-of-mass energies ranging from 4.628 to 4.698 GeV with a total integrated luminosity of 3.7 fb(-1). An excess of events over the known contributions of the conventional charmed mesons is observed near the D-s(-) D*(0) and D-s*(-) D-0 mass thresholds in the K+ recoil-mass spectrum for events collected at root s = 4.681 GeV. The structure matches a mass-dependent-width Breit-Wigner line shape, whose pole mass and w...

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Observation of a Near-Threshold Structure in the K+ Recoil-Mass Spectra in e+e- →k+ (Ds- D∗0+ Ds∗- D0)

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