Study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi>ω</mml:mi><mml:msub><mml:mi>χ</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mi>J</mml:mi></mml:mrow></mml:msub></mml:math>at Center of Mass Energies from 4.21 to 4.42 GeV

Ablikim, M.; Ачасов, М. Н.; Ai, X.; Albayrak, O.; Albrecht, M.; Ambrose, D.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Ferroli, R. Baldini; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E.; Bondarenko, O.; Boyko, I. R.; Briere, R. A.; Cai, H.; Cai, X.; Çakır, O.; Calcaterra, A.; Cao, G. F.; Çetin, S. A.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, H. Y.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, X.; Chen, X. R.; Chen, Y. B.; Cheng, H. P.; Chu, X. K.; Chu, Y. P.; Cibinetto, G.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J. P.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Mori, F. De; Ding, Y.; Dong, C.; Dong, J.; Liu, Dong; Dong, M. Y.; Du, S. X.; Duan, Pengfei; Fan, J.; Fang, J.; Fang, S. S.; Fang, Xin; Fang, Y.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fioravanti, E.; Fu, C. D.; Gao, Q.; Gao, Y.; Garzia, I.; Goetzen, K.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, Tingting; Guo, Y. P.; Haddadi, Z.; Hafner, A.; Han, S.; Han, Y. L.; Harris, F. A.; He, K. L.; He, Z. Y.; Held, T.; Heng, Y. K.; Hou, Z. L.; Chen, Hu; Hu, H. M.; Hu, J. F.; Hu, T.; Hu, Y.; Huang, G. M.; Huang, G. S.; Huang, Hongxia; Huang, J. S.; Huang, X. T.; Huang, Y.; Hussain, T.; Ji, Q.; Ji, X. B.; Ji, X. L.; Jiang, L. L.; Jiang, L. W.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Johansson, T.; Julin, A.; Kalantar‐Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Kliemt, R.; Kloss, B.; Kolcu, O. B.; Kopf, B.; Kornicer, M.; Kuehn, W.; Kupść, A.; Lai, W.; Lange, J. S.; Lara, M.; Larin, P.; Li, Cheng; Li, C. H.; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, Jin; Li, K.; Li, K.; Li, P. R.; Li, T.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. M.; Li, X. N.; Li, X. Q.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Lin, D. X.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. H.; Liu, H. H.; Liu, H. M.; Liu, J.; Liu, J. P.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, L. D.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, X. X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lou, X.; Lü, H. J.; Lu, J. G.; Lu, R. Q.; Lu, Y.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lv, M.; Lyu, X. R.; C., F.; L., H.; L., L.; M., Q.; Ma, S.; Ma, Tao; N., X.; Y., X.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Messchendorp, J. G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Moeini, H.; Morales, C. Morales; Moriya, K.; Muchnoi, N. Yu.; Muramatsu, H.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, S. L.; Niu, X. Y.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Patterí, P.; Pelizaeus, M.; Peng, H.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Pu, Yudong; Qi, M.; Qian, S. J.; Qiao, C. F.; Liu, Qin; Qin, Ning; Qin, X. S.; Qin, Yao; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Redmer, C. F.; Ren, H.; Ripka, M.; Rong, G.; Ruan, X. D.; Santoro, V.; Sarantsev, A.; Savrié, M.; Schoenning, K.; Schumann, S.; Shan, W.; Shao, M.; Shen, C. P.; Shen, P. X.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, W. M.; Song, X. Y.; Sosio, S.; Spataro, S.; Spruck, B.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Tapan, I.; Thorndike, E. H.; Tiemens, M.; Toth, D.; Ullrich, M.; Uman, I.; Varner, G.; Wang, B.; Wang, B. L.; Wang, D.; Wang, D. Y.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q. J.; Wang, S. G.; Wang, W.; Wang, X. F.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. H.; Wang, Z. Y.; Wei, D. H.; Wei, J. B.; Weidenkaff, P.; Wen, S. P.; Wiedner, U.; Wolke, M.; Wu, L. H.; Wu, Z.; Xia, L.; Xia, Y.; Xiao, D.; Xiao, Z. J.; Xie, Y.; Xiu, Q. L.; Xu, G. F.; Xu, Lei; Xu, Q. J.; Xu, Q.; Xu, X. P.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Y. H.; Yang, H. X.; Yang, L.; Yang, Yifan; Ye, H.; Ye, M.; Ye, M. H.; Yin, J. H.; Yu, B. X.; Yu, C. X.; Yu, H. W.; Yu, J. S.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Yuncu, A.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J. J.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, K.; Zhang, L.; Zhang, S. H.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Z. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, Jiawei; Zhao, J. Y.; Zhao, J.; Liu, Zhao; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, W. J.; Zheng, Y.; Zhong, B.; Li, Zhou; Zhou, X. K.; Zhou, X. R.; Zhou, X. Y.; Zhu, K. J.; Zhu, S. H.; Zhu, Xiaoyu; Zhu, Y.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.

doi:10.1103/physrevlett.114.092003

Cited by 125 publications

(96 citation statements)

References 25 publications

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“…Chen, Liu and Matsuki [842] introduced the ψ(4S ) to explain the enhancement in e + e − → ωχ c0 . They calculated the branching ratio of ψ(4S ) → ωχ c0 from the meson loop contribution and estimated the upper limit of the branching ratio of ψ(4S ) → ηJ/ψ to be 1.9 × 10 −3 , which is consistent with the experimental data [841,843]. In Ref.…”

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-csupporting

confidence: 71%

“…The mass and width of the ψ(4S ) were extracted to be m ψ(4S ) = (4234 ± 5) MeV, Γ ψ(4S ) = (29±14) MeV and m ψ(4S ) = (4220±8) MeV, Γ ψ(4S ) = (43±9) MeV for Scheme I and Scheme II, respectively. The narrow structure around 4.2 GeV in e + e − → h c (1P)π + π − [160,840], e + e − → ωχ c0 [841], e + e − → ψ(2S )π + π − [145] may be due to the same state ψ(4S ).…”

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-cmentioning

confidence: 95%

“…Later, the BESIII Collaboration reported an enhancement structure in e + e − → ωχ c0 [841], which has a mass M = (4230 ± 8) MeV and width Γ = (38 ± 12) MeV. BESIII indicated that this resonance structure is different from the Y(4260) reported in the analysis of e + e − → J/ψπ + π − [62].…”

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-cmentioning

confidence: 99%

“…Since there exist evidences of narrow structures around 4.2 GeV in e + e − → h c (1P)π + π − [160,840], e + e − → ωχ c0 [841], e + e − → ψ(2S )π + π − [145], Chen, Liu, and Matsuki performed a combined fit to these hidden-charm decay channels under two schemes [807]. The mass and width of the ψ(4S ) were extracted to be m ψ(4S ) = (4234 ± 5) MeV, Γ ψ(4S ) = (29±14) MeV and m ψ(4S ) = (4220±8) MeV, Γ ψ(4S ) = (43±9) MeV for Scheme I and Scheme II, respectively.…”

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-cmentioning

confidence: 99%

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The hidden-charm pentaquark and tetraquark states

et al. 2016

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In the past decade many charmonium-like states were observed experimentally. Especially those charged charmoniumlike Z c states and bottomonium-like Z b states can not be accommodated within the naive quark model. These charged Z c states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. We list the puzzles and theoretical challenges of these models when confronted with the experimental data. We also discuss possible future measurements which may distinguish the theoretical schemes on the underlying structures of the hidden-charm multiquark states.

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Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-csupporting

confidence: 71%

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-cmentioning

confidence: 95%

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-cmentioning

confidence: 99%

Section: Narrow Enhancement Structures Around 42 Gev In the Hidden-cmentioning

confidence: 99%

See 2 more Smart Citations

The hidden-charm pentaquark and tetraquark states

et al. 2016

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show abstract

“…The e + e − → ωχ c0 process was observed at √ s = 4.23 and 4.26 GeV for the first time [19]. By examining the ωχ c0 cross section as a function of center-of-mass energy as shown in Fig.…”

Section: Observation Of Y(4260) → γX(3872)mentioning

confidence: 99%

Recent results on hadron spectroscopy from BESIII

Liu¹

2016

AIP Conference Proceedings

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Abstract. Hadron spectroscopy is one of the most important physics goals of BESIII. BESIII brings great opportunities to study the XYZ states of charmonium by directly producing the Y states up to 4.6 GeV. High statistics of charmonium decays collected at BESIII provide an excellent place for hunting gluonic excitations and studying the excited baryons. Recent results of light hadron spectroscopy and charmonium spectroscopy from BESIII will be reported.

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Study of e+e− → γϕJ/ψ from $$ \sqrt{s} $$ = 4.600 to 4.951 GeV

Ablikim

Ачасов

Adlarson

et al. 2023

J. High Energ. Phys.

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Using data samples with an integrated luminosity of 6.4 fb−1 collected by the BESIII detector operating at the BEPCII storage ring, the process of e+e− → γϕJ/ψ is studied. The processes of e+e− → ϕχc1,c2, χc1,c2 → γJ/ψ are observed with a significance of more than 10σ. The $$ \sqrt{s} $$ s -dependent cross section of e+e− → ϕχc1,c2 is measured between 4.600 and 4.951 GeV, and evidence of a resonance structure is found for the first time in the ϕχc2 process. We also search for the processes of e+e− → γX(4140), γX(4274) and γX(4500) via the γϕJ/ψ final state, but no obvious structures are found. The upper limits on the production cross section times the branching fraction for these processes at the 90% confidence level are reported.

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Study ofe+e−→ωχcJat Center of Mass Energies from 4.21 to 4.42 GeV

Cited by 125 publications

References 25 publications

The hidden-charm pentaquark and tetraquark states

The hidden-charm pentaquark and tetraquark states

Recent results on hadron spectroscopy from BESIII

Study of e+e− → γϕJ/ψ from $$ \sqrt{s} $$ = 4.600 to 4.951 GeV

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