Search for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4140</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>via<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="

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. A.; 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.; Cibinetto, G.; Cronin-Hennessy, D.; 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.; 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.; Fritsch, M.; 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.; 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, Jifeng; 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, Q.; Ji, Xiao Bin; 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, C.H.; Li, Cheng; Li, D.M.; Li, F.; Li, G.; Li, H.B.; Li, J.C.; Li, Jin; 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.; Liu, Han; 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.M.; Liu, J.; Liu, J.P.; Liu, J.Y.; Liu, K.; Liu, K.Y.; Liu, L.D.; Liu, P.L.; Liu, Q.; Liu, S.B.; Liu, X.; Liu, X.X.; Liu, Y.B.; Liu, Z.A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lou, X.; Lu, H.; Lu, J. G.; Lu, R. Q.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lv, M.; Lyu, X. R.; Ma, F.C.; Ma, H.L.; L., L.; Ma, Qiumei; Ma, S.; Ma, Tian; Ma, Xiao-Dong; Ma, Xiaoyan; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, Y.; Mao, Z. P.; Marcello, S.; Messchendorp, J. G.; Jiang, Min; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; 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.; 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.; 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.; Weber, T.; Wei, D. H.; Wei, J. B.; Weidenkaff, P.; Wen, S. P.; Wiedner, U.; Wolke, M.; Wu, L. H.; Wang, Zhi; Xia, L.; Xia, Y.; Xiao, D.; Xiao, Z. J.; Xie, Y.; Xu, G. F.; Xu, L.; Xu, Q. J.; Xu, Q. N.; Xu, X. P.; Yan, L.; Yan, W. B.; Yan, W.; Yan, Y. H.; Yang, H. X.; Yang, L.; Yang, Y.; 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. Z.; Liu, Zhao; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, Y. B.; Zhao, Z.; 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, K.; Zhu, S. H.; Zhu, X.; Zhu, Y.; Zhu, Y.S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.

doi:10.1103/physrevd.91.032002

Cited by 23 publications

(19 citation statements)

References 39 publications

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“…Finally, the BESIII Collaboration searched for Y(4140) via e + e − → γφJ/ψ at √ s =4. 23, 4.26, 4.36, and 4.60 GeV, but no significant Y(4140) signal is observed in any of the data samples [65,66].…”

Section: Y(4140) Statementioning

confidence: 83%

“…Belle [52] Y(4008) 3891 ± 42 255±42 1 −− e + e − → π + π − J/ψ Belle [44,53], BESIII [54] 2007 Z c (4020) 4024.1 ± 1.9 13 ± 5 ? ?− e + e − → π − (π + h c ) BESIII [55] 2013 Y(4260) → π − (D * D * ) + BESIII [ 1 ++ B → K(φJ/ψ) CDF [61,62], D0 [63], LHCb [64], BESIII [65,66] ? ?+ B → K(π + χ c1 (1P)) Belle [57], BaBar [58] 2008 Y(4260) 4230 ± 8 55±19 1 −− e + e − → π + π − J/ψ BaBar [72,73], CLEO-c [74], Belle [44,53], BESIII [54] 2005 e + e − → K + K − J/ψ CLEO-c [75], BESIII [46] e + e − → π 0 π 0 J/ψ CLEO-c [75] e + e − → Z c (3900) ± π ∓ Belle [44], BESIII [43] X(4350) 4350.6 +4.6 1 −− e + e − → π + π − ψ(2S ) BaBar [77,78], Belle [59,79], BESIII [70] 2007 e + e − → π + π − J/ψ BESIII [54] Y(4390) 4391.5…”

Section: +27mentioning

confidence: 99%

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QCD sum rules approach to the X, Y and Z states

Albuquerque

Dias

Khemchandani

et al. 2019

J. Phys. G: Nucl. Part. Phys.

118

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In the past decade, due to the experimental observation of many charmonium-like states, there has been a revival of hadron spectroscopy. In particular, the experimental observation of charged charmonium-like, Z c states, and bottomonium-like, Z b states, represents a challenge since they can not be accommodated within the naive quark model. These charged states are good candidates of either tetraquark or molecular states and their observation motivated a vigorous theoretical activity. This is a rapidly evolving field with enormous amount of new experimental information. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. The present review is written from the perspective of the QCD sum rules approach, where we present the main steps of concrete calculations and compare the results with other approaches and with experimental data.

show abstract

Section: Y(4140) Statementioning

confidence: 83%

Section: +27mentioning

confidence: 99%

QCD sum rules approach to the X, Y and Z states

Albuquerque

Dias

Khemchandani

et al. 2019

J. Phys. G: Nucl. Part. Phys.

118

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show abstract

“…decay modes, respectively, determined from MC simulations. The η ð 0 Þ branching fractions are taken from the Particle Data Group (PDG) [12]. Similarly the ratio of the number of η → γγ events to the number of η → π þ π − π 0 is fixed at ½Bðη → γγÞ · ϵ η→γγ =Bðη → π þ π − π 0 Þ · Bðπ 0 → γγÞ · ϵ η→π þ π − π 0 ¼ 2.597 AE 0.006.…”

Section: Studies Of Charmoniummentioning

confidence: 99%

“…The cor of h c → γη 0 and h c → γη 0.27Þ × 10 −3 and ð4.7 AE 1.5 statistical. The results for h c Systematic uncertainties measurement for h c → γη 0 ð data/MC difference in the detection, π 0 =η reconstructi well as from MC statistics, from world averages [12], th the data set, the fit range, the The difference between tracking efficiency for each be 1% [15], and so a 2% sys all channels with charged t photon detection efficiency of the control sample J=ψ → per photon [16].…”

Section: Studies Of Charmoniummentioning

confidence: 99%

“…In summary, we measure the e + e − → π + π − hc Born cross section using data at 79 CM energy points from 3.896 to 4.600 GeV. The cross sections are of the same order of magnitude as those of the e + e − → π + π − J/ψ and e + e − → π + π − ψ(2S) [4][5][6][7][8][9][10][11][12], but with a different line shape. The cross section drops in the high energy region, but more slowly than for the e + e − → π + π − J/ψ process.…”

Section: Parametersmentioning

confidence: 99%

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Results from Electron-Positron Collisions at BESIII

Mitchell¹

2017

Proceedings of 38th International Conference on High Energy Physics — PoS(ICHEP2016)

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A selection of results from electron-positron collisions at BESIII are reviewed. The results presented here illustrate the wide range of physics topics that can be studied using the Beijing Electron Positron Collider (BEPC). At low collision energies, the cross section for e + e − → π + π − provides much-needed input into theoretical calculations of the anomalous magnetic moment of the muon, and the reaction e + e − → pp provides access to the electromagnetic form factors of the proton. In the charmonium region, a large sample of ψ decays can be used to measure new decay modes of charmonium states. And at higher energies, BESIII is uniquely situated to explore questions concerning the still-unexplained XY Z states. PoS(ICHEP2016)600Results from BESIII Ryan E. Mitchell BESIII has collected a variety of data sets for e + e − collisions with center-of-mass energies between 2.0 and 4.6 GeV [1]. A few of the highlights, from low to high energy, include: a scan of the region between 2.0 and 3.0 GeV; 1.3 billion J/ψ decays; 450 million ψ decays; 2.9 fb −1 of data at the ψ(3770) mass; about 3 fb −1 at 4.18 GeV (primarily for studies of the D s meson); 0.8 fb −1 in a scan of the region between 3.85 and 4.59 GeV (spread over 104 points); and over 4 fb −1 collected between 3.81 and 4.60 GeV (in sets ranging from 50 pb −1 to 1.1 fb −1 ) for studies of the XY Z states. In addition to these fixed energies, one can also study e + e − collisions at any lower center-of-mass energy using the Initial State Radiation (ISR) technique, where photons are radiated from the primary e + or e − before the collision. The following represents a small selection of the recent results that have been derived from these data sets. Anomalous Magnetic Moment of the MuonThe difference between the Standard Model (SM) and the experimental (E821) values for the anomalous magnetic moment of the muon, a µ ≡ (g µ − 2)/2, is currently larger than 3σ :The error in the SM calculation is dominated by the Hadronic Vacuum Polarization (HVP) contribution, which is estimated using experimental input from e + e − collisions to hadrons. The cross section for e + e − collisions to hadrons, in turn, is dominated by the reaction e + e → π + π − in the region of the ρ meson, corresponding to collision energies between 600 and 900 MeV. But here there are experimental differences between BaBar and KLOE, as shown in Figure 1b, on the order of several sigma. If only the BaBar measurement is used in a SM µ , the difference between SM and experiment drops below 3σ . It is thus crucial to provide more experimental input. Letters B 753 (2016) 629-638 635 ed due to this efmoved by applying lgorithm. Here, the a MC sample that ter τ is determined rections for the raof 2%, one obtains is found to be ry and agree with as systematic unmethod (1) is used rection thin the Phokhara ry precise descrip-.5% [16]. polarization effects dressed cross secis adjusted for the and dressed cross (7) n the investigated ces are: ncertainty is student sources. Firstly, e data samples are n ...

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Study of the XYZ states at the BESIII

Yuan

2015

Front. Phys.

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With its unique data samples at energies of 3.8-4.6 GeV, the BESIII experiment made a significant contribution to the study of charmonium and charmonium-like states, i.e., the XYZ states. We review the results for observations of the Z c (3900) and Z c (4020) states, the X(3872) in e + e − annihilation, and charmonium ψ(1 3 D 2 ) state, as well as measurements of the cross-sections of ωχ cJ and ηJ/ψ, and the search for e + e − → γχ cJ and γY (4140). We also present data from BESIII that may further strengthen the study of the XYZ and conventional charmonium states, and discuss perspectives on future experiments.

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Search for theY(4140)viae+e−
M. Ablikim¹,
М. Н. Ачасов²,
X. Ai³
et al.

Cited by 23 publications

References 39 publications

QCD sum rules approach to the X, Y and Z states

QCD sum rules approach to the X, Y and Z states

Results from Electron-Positron Collisions at BESIII

Study of the XYZ states at the BESIII

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Search for theY(4140)viae+e−M. Ablikim1, М. Н. Ачасов2, X. Ai3 et al.

Cited by 23 publications

References 39 publications

QCD sum rules approach to the X, Y and Z states

QCD sum rules approach to the X, Y and Z states

Results from Electron-Positron Collisions at BESIII

Study of the XYZ states at the BESIII

Contact Info

Product

Resources

About

Search for theY(4140)viae+e−
M. Ablikim¹,
М. Н. Ачасов²,
X. Ai³
et al.