Evidence of a Resonant Structure in the 
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Ablikim, M.; Ачасов, М. Н.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, Y.; Bakina, O.; Ferroli, R. Baldini; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E.; Boyko, I. R.; Briere, R. A.; Cai, H.; Cai, X.; Çakır, O.; Calcaterra, A.; Cao, G. F.; Çetin, S. A.; Chai, J.; Chang, J. F.; Chelkov, G. A.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, P. L.; Chen, S. J.; Chen, Y. B.; Cibinetto, G.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; Dedovich, D. V.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Mori, F. De; Ding, Y.; Dong, C.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dou, Z. L.; Du, S. X.; Duan, Pengfei; Fan, J.; Fang, J.; Fang, S. S.; Fang, Xin; Fang, Y.; Farinelli, R.; Fava, L.; Fegan, S.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fritsch, M.; Fu, C. D.; Gao, Q.; Gao, X. L.; Gao, Y.; Gao, Y.; Gao, Z.; Garzia, I.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, S.; Gu, Y. T.; Guo, A. Q.; Guo, L. B.; Guo, R. P.; Guo, Y. P.; Haddadi, Z.; Han, S.; Hao, X. Q.; Harris, F. A.; He, K. L.; Heinsius, F. H.; Held, T.; Heng, Y. K.; Holtmann, T.; Hou, Z. L.; Chen, Hu; Hu, H. M.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, J. S.; Huang, X. T.; Huang, Xiaozhong; Huang, Z.; Hussain, T.; Andersson, W. Ikegami; Ji, Q.; Ji, X. B.; Ji, X. L.; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jin, Y.; Johansson, T.; Julin, A.; Kalantar‐Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Khan, Tabassum; Khoukaz, A.; Kiese, P.; Kliemt, R.; Koch, L.; Kolcu, O. B.; Kopf, B.; Kornicer, M.; Kuemmel, M.; Kuessner, M.; Kuhlmann, M.; Kupść, A.; Kühn, W.; Lange, J. S.; Lara, M.; Larin, P.; Lavezzi, L.; Leiber, S.; Leithoff, H.; Leng, C.; Li, C.; Li, Cheng; Li, D. M.; Li, F.; Li, F. Y.; Li, G.; Li, H. B.; Li, H. J.; Li, J. C.; Li, K. J.; Li, Kang; Li, Ké; Li, Lei; Li, P. L.; Li, P. R.; Li, Q. Y.; Li, T.; Li, W. D.; Li, W. G.; Li, X. L.; 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.; Liu, B. J.; Liu, C. X.; Liu, D.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. M.; Liu, Huanhuan; Liu, Huihui; Liu, J. B.; Liu, J. P.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, Ke; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqing; Long, Y. F.; Lou, X.; Lü, H. J.; Lu, J. G.; Lu, Y.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, X. L.; Lyu, X. R.; C., F.; L., H.; L., L.; Ma, M. M.; M., Q.; Ma, Tian; N., X.; Y., X.; M., Y.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Meng, Z.; Messchendorp, J. G.; Mezzadri, G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Morales, C. Morales; Morello, G.; Muchnoi, N. Yu.; Muramatsu, H.; Mustafa, A.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, S. L.; Niu, X. Y.; Olsen, S. 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Q.; Wang, Z.; Wang, Z. G.; Wang, Z. H.; Wang, Z. Y.; Wang, Zongyuan; Weber, T.; Wei, D. H.; Weidenkaff, P.; Wen, S. P.; Wiedner, U.; Wolke, M.; Wu, L. H.; Wu, L. J.; Wu, Z.; Xia, L.; Xia, X. M.; Xia, Y.; Xiao, D.; Xiao, H.; Xiao, Y. J.; Xiao, Z. J.; Xie, Y.; Xie, Y.; Xiong, X. A.; Xiu, Q. L.; Xu, G. F.; Xu, Jingyi; Xu, Lei; Xu, Q. J.; Xu, Q. N.; Xu, X. P.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Y. H.; Yang, H. J.; Yang, H. X.; Yang, L.; Yang, Yifan; Yang, Yifan; Ye, M.; Ye, M. H.; Yin, J. H.; Zhou, You; Yu, B. X.; Yu, C. X.; Yuan, C. Z.; Yuan, Y.; Yuncu, A.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zeng, Z.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, K.; Zhang, L.; Zhang, S. Q.; Zhang, X. Y.; Zhang, Y. H.; Zhang, Y. T.; Zhang, Yang; Zhang, Yao; Zhang, Yu; Zhang, Z. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, J. W.; Zhao, J. Y.; Zhao, J. Z.; 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, Xiang; Zhou, X. R.; Zhou, X. Y.; Zhou, Y.; Zhu, Jing; Zhu, K.; Zhu, K. J.; Zhu, S. H.; Zhu, X.; Zhu, Y.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.

doi:10.1103/physrevlett.122.102002

Cited by 66 publications

(52 citation statements)

References 32 publications

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“…Here, interaction between ψ(4S ) and D 1 (2420)D is a typical S -wave coupling while coupling of ψ(4S ) with DD, DD * , and D * D * occurs via P-wave interaction. Thus, D 1 (2420)D is one of the most important channels among the allowed coupled channels for ψ(4S ), which results in a chain reaction e + e − → ψ(4S ) → D 0 D * − π + via the virtual D 1 (2420) 0 D 0 as revealed by BESIII [91].…”

Section: State Massmentioning

confidence: 97%

“…Thus, we should wait for more precise data from BESIII and Belle II. In 2018, the BESIII Collaboration released the measurements of the cross section of e + e − → D 0 D * − π + [91]. In their analysis, the e + e − → D * D * → D 0 D * − π + contribution was rejected, and the e + e − → D * 2 (2460) + D * − → D 0 D * − π + and e + e − → D 1 (2420) 0 D 0 → D 0 D * − π + are allowed [91].…”

Section: State Massmentioning

confidence: 99%

“…In 2018, the BESIII Collaboration released the measurements of the cross section of e + e − → D 0 D * − π + [91]. In their analysis, the e + e − → D * D * → D 0 D * − π + contribution was rejected, and the e + e − → D * 2 (2460) + D * − → D 0 D * − π + and e + e − → D 1 (2420) 0 D 0 → D 0 D * − π + are allowed [91]. A clear enhancement around 4.23 GeV was observed in the D 0 D * − π + invariant mass spectrum, which hints that this structure may have a strong coupling to the virtual D 1 (2420) 0 D 0 channel.…”

Section: State Massmentioning

confidence: 99%

See 2 more Smart Citations

Constructing J/ψ family with updated data of charmoniumlike Y states

et al. 2019

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Based on the updated data of charmoniumlike state Y(4220) reported in the hidden-charm channels of the e + e − annihilation, we propose a 4S -3D mixing scheme to categorize Y(4220) into the J/ψ family. We find that the present experimental data can support this charmonium assignment to Y(4220). Thus, Y(4220) plays a role of a scaling point in constructing higher charmonia above 4 GeV. To further test this scenario, we provide more abundant information on the decay properties of Y(4220), and predict its charmonium partner ψ(4380), whose evidence is found by analyzing the e + e − → ψ(3686)π + π − data from BESIII. If Y(4220) is indeed a charmonium, we must face how to settle the established charmonium ψ(4415) in the J/ψ family. In this work, we may introduce a 5S -4D mixing scheme, and obtain the information of the resonance parameters and partial open-charm decay widths of ψ(4415), which do not contradict the present experimental data. Additionally, we predict a charmonium partner ψ(4500) of ψ(4415), which can be accessible at future experiments, especially, BESIII and BelleII. The studies presented in this work provide new insights to establish the higher charmonium spectrum.PACS numbers: I. INTRODUCTIONIn 1974, J/ψ particle was discovered by the E598 [1] Collaboration in the p + Be → e + + e − + x reaction and the SLAC-SP-017 Collaboration [2] in the e + e − annihilation at the same time. The observation of J/ψ confirmed the existence of a charm quark predicted by the Glashow-Iliopoulos-Maiani mechanism [3]. Since then, a series of charmoniumlike states, ψ(3686) [4], ψ(3770) [5], ψ(4040) [6], ψ(4160) [7], and ψ(4415) [8], were reported, which construct a main body of the observed charmonium spectrum as shown in Particle Data Group (PDG) [9]. In Fig. 1, we collect the corresponding information of the observed charmonia with the year for their first discoveries. It is obvious that the year 1978 is an important time point since most of charmonia listed in the latest PDG were announced.Under this experimental background, the Cornell model was proposed by Eichten et al. [18,19], where the Cornell potential V(r) = −k/r + r/a 2 composed of Coulomb-type and linear potentials, which depicts the interaction between charm and anticharm quarks, was postulated and applied to study the observed charmonia [20]. As a successful phenomenological model, the Cornell model can describe the observed charmonia at that time. Inspired by the Cornell model, different potential models were developed by various groups [21][22][23][24][25][26][27][28][29][30][31][32][33][34]. Among these, a famous one is the Godfrey-Isgur (GI) model [34], which has semi-relativistic expression of the kinetic and potential energy terms. The GI model was employed to quan- * Electronic address:

show abstract

Section: State Massmentioning

confidence: 97%

Section: State Massmentioning

confidence: 99%

Section: State Massmentioning

confidence: 99%

See 1 more Smart Citation

Constructing J/ψ family with updated data of charmoniumlike Y states

et al. 2019

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show abstract

“…[30]). Their only opencharm decays yet observed are Y (4230) → π + D 0 D * − [36], [32,33], and Y (4660) → Λ + c Λ − c , and this latter mode has not been confirmed to belong specifically to Y (4660). Y (4230), Y (4260), Y (4360), and Y (4626) are confirmed to be I = 0 due to their observed decays to χ c0 ω, J/ψ f 0 (980), ψ(2S) π 0 π 0 , and D s D s1,s2 , respectively.…”

Section: Experimental Review Of Relevant Statesmentioning

confidence: 99%

“…1. Y (4230), Y (4260), Y (4360), Y (4390) masses are as given in the PDG (Table II) [36,39]. P s QQ =0 values are as given in Case 3.…”

Section: Comparison To Datamentioning

confidence: 99%

Spectrum of p -wave hidden-charm exotic mesons in the diquark model

Giron

Lebed

2020

Phys. Rev. D

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We study the fine structure in the spectrum of known and predicted negative-parity hidden-charm exotic meson states, which comprise the lowest P -wave multiplet in the dynamical diquark model. Starting with a form previously shown to successfully describe the S-wave states, we develop a 5parameter Hamiltonian that includes spin-orbit and tensor terms. After discussing the experimental status of the observed J P C = 1 −− states Y with respect to masses and decay modes (classified by eigenvalues of heavy-quark spin), we note a number of inconsistencies between measurements from different experiments that complicate a unique determination of the spectrum. Outlining a variety of scenarios for interpreting the Y data, we perform fits to each one, obtaining results that demonstrate differing possibilities for the P -wave spectra. Choosing one of these fits for illustration, we predict masses for all 28 isomultiplets in this 1P multiplet, compare the results to tantalizing hints in the data, and discuss the rich discovery potential for new states.

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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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Evidence of a Resonant Structure in the e+e−→π+D

Cited by 66 publications

References 32 publications

Constructing J/ψ family with updated data of charmoniumlike Y states

Constructing J/ψ family with updated data of charmoniumlike Y states

Spectrum of p -wave hidden-charm exotic mesons in the diquark model

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

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