Study of the XYZ states at the BESIII

doi:10.1007/s11467-015-0484-y

Frontiers of Physics

2015, Vol. 10

Issue (6): 101401 https://doi.org/10.1007/s11467-015-0484-y

本期目录

Study of the XYZ states at the BESIII

Chang-Zheng Yuan(

)

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

全文: PDF(649 KB)

Abstract：

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(1³D₂) 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.

Key words： charmonium exotic states e⁺e⁻ annihilation hadronic transitions radiative transtitions

收稿日期: 2015-08-09 出版日期: 2015-12-28

Corresponding Author(s): Chang-Zheng Yuan

引用本文:

. [J]. Frontiers of Physics, 2015, 10(6): 101401.
Chang-Zheng Yuan. Study of the XYZ states at the BESIII. Front. Phys. , 2015, 10(6): 101401.

链接本文:

https://academic.hep.com.cn/fop/CN/10.1007/s11467-015-0484-y
https://academic.hep.com.cn/fop/CN/Y2015/V10/I6/101401

1	A. J. Bevan, . (BaBar and Belle Collaborations), The physics of the B factories, Eur. Phys. J. C 74, 3026 (2014) https://doi.org/10.1140/epjc/s10052-014-3026-9
2	For a recent review, see: N. Brambilla, ., Heavy quarkonium: Progress, puzzles, and opportunities, Eur. Phys. J. C 71, 1534 (2011) https://doi.org/10.1140/epjc/s10052-010-1534-9
3	M. Ablikim, . (BESIII Collaboration), Design and construction of the BESIII detector, Nucl. Instrum. Methods Phys. Res. Sect. A 614, 345 (2010) https://doi.org/10.1016/j.nima.2009.12.050
4	D. M. Asner, ., Physics at BES-III, Int. J. Mod. Phys. A 24, S1 (2009)
5	M. Ablikim, . (BESIII Collaboration), Observation of a charged charmoniumlike structure in e + e − → π + π − J/ψ at s= 4.26 GeV, Phys. Rev. Lett. 110, 252001 (2013) https://doi.org/10.1103/PhysRevLett.110.252001
6	M. Ablikim, . (BESIII Collaboration), Measurements of the center-of-mass energies via the di-muon process at BESIII, to be submitted to Chin. Phys. C
7	M. Ablikim, . (BESIII Collaboration), Precision measurement of the integrated luminosity of the data taken by BESIII at center of mass energies between 3.810 GeV and 4.600 GeV, arXiv: 1503.03408 [hep-ex]
8	Z. Q. Liu, . (Belle Collaboration), Study of e + e − → π + π − J/ψ and observation of a charged charmoniumlike state at Belle, Phys. Rev. Lett. 110, 252002 (2013) https://doi.org/10.1103/PhysRevLett.110.252002
9	T. Xiao, S. Dobbs, A. Tomaradze, and K. K. Seth, Observation of the charged hadron Z±c (3900) and evidence for the neutral Z0c (3900) in e + e − → π π J/ψ at s = 4170 MeV, Phys. Lett. B 727, 366 (2013) https://doi.org/10.1016/j.physletb.2013.10.041
10	M. Ablikim, . (BESIII Collaboration), Observation of Z0c (3900) in e + e − → π 0 π 0 J/ψ , Phys. Rev. Lett. 110, 252001 (2013) https://doi.org/10.1103/PhysRevLett.110.252001
11	M. Ablikim, . (BESIII Collaboration), Observation of a charged (DD ¯)− mass peak in e + e − → π+(DD ¯)− at Ecm=4.26 GeV, Phys. Rev. Lett. 112, 022001 (2014) https://doi.org/10.1103/PhysRevLett.112.022001
12	K. A. Olive, . (Particle Data Group), The Review of Particle Physics, Chin. Phys. C 38, 090001 (2014) https://doi.org/10.1088/1674-1137/38/9/090001
13	M. Ablikim, . (BESIII Collaboration), Observation of e + e − → η J/ψ at center-of-mass energy s = 4.009 GeV, Phys. Rev. D 86, 071101 (2012) https://doi.org/10.1103/PhysRevD.86.071101
14	M. Ablikim, . (BESIII Collaboration), Observation of a charged charmoniumlike structure Zc(4020) and search for the Zc(3900) in e + e − → π + π − hc, Phys. Rev. Lett. 111, 242001 (2013) https://doi.org/10.1103/PhysRevLett.111.242001
15	M. Ablikim, . (BESIII Collaboration), Observation of e + e − → π 0 π 0 hc hc and a neutral charmoniumlike structure Zc(4020)0, Phys. Rev. Lett. 113(21), 212002 (2014) https://doi.org/10.1103/PhysRevLett.113.212002
16	M. Ablikim, . (BESIII Collaboration), Observation of a charged charmoniumlike structure in e + e − → (DD ¯)± π∓ at s= 4.26 GeV, Phys. Rev. Lett. 112, 132001 (2014) https://doi.org/10.1103/PhysRevLett.112.132001
17	M. Ablikim, . (BESIII Collaboration), Observation of a neutral charmoniumlike state Zc(4025)0 in e + e − → (DD ¯)0 π 0, arXiv: 1507.02404 [hep-ex]
18	M. Ablikim, . (BESIII Collaboration), Observation of e + e − → γ X(3872) at BESIII, Phys. Rev. Lett. 112(9), 092001 (2014) https://doi.org/10.1103/PhysRevLett.112.092001
19	K. T. Chao, Z. G. He, D. Li, and C. Meng, Search for C = + charmonium states in e + e − → γ + X at BEPCII/BESIII, arXiv: 1310.8597 [hep-ph]
20	F. K. Guo, C. Hanhart, U. G. Meißner, Q. Wang, and Q. Zhao, Production of the X(3872) in charmonia radiative decays, Phys. Lett. B 725, 127 (2013) https://doi.org/10.1016/j.physletb.2013.06.053
21	C. Z. Yuan (for the BES and Belle Collaborations), Exotic Hadrons, arXiv: 0910.3138 [hep-ex]. We take 5% from the range presented in the paper of 2.3%< B(X(3872) → π + π − J/ψ)<6.6% at 90% C.L.
22	M. Ablikim, . (BESIII Collaboration), Observation of the ψ(1 3D2) state in e + e − → π + π − γχ c1 at BESIII, Phys. Rev. Lett. 115(1), 011803 (2015) https://doi.org/10.1103/PhysRevLett.115.011803
23	V. Bhardwaj, . (Belle Collaboration), Evidence of a new narrow resonance decaying to χc1γ in B → χc1γK, Phys. Rev. Lett. 111(3), 032001 (2013) https://doi.org/10.1103/PhysRevLett.111.032001
24	A. Kolmogorov, Sulla determinazione empirica di una legge di distribuzione, G. Inst. Ital. Attuari. 4, 83 (1933)
25	E. Eichten, K. Gottfried, T. Kinoshita, K. D. Lane, and T. M. Yan, Charmonium: The Model, Phys. Rev. D 17, 3090 (1978) [Phys. Rev. D 21, 313 (1980)] https://doi.org/10.1103/PhysRevD.17.3090
26	T. Barnes, S. Godfrey, and E. S. Swanson, Higher charmonia, Phys. Rev. D 72, 054026 (2005) https://doi.org/10.1103/PhysRevD.72.054026
27	S. Godfrey and N. Isgur, Mesons in a relativized quark model with chromodynamics, Phys. Rev. D 32, 189 (1985) https://doi.org/10.1103/PhysRevD.32.189
28	W. Kwong, J. L. Rosner, and C. Quigg, Heavy quark systems, Ann. Rev. Nucl. Part. Sci. 37, 325 (1987) https://doi.org/10.1146/annurev.ns.37.120187.001545
29	D. Ebert, R. N. Faustov, and V. O. Galkin, Properties of heavy quarkonia and Bc mesons in the relativistic quark model, Phys. Rev. D 67, 014027 (2003) https://doi.org/10.1103/PhysRevD.67.014027
30	E. J. Eichten, K. Lane, and C. Quigg, Charmonium levels near threshold and the narrow state X(3872) → π + π − J/ψ, Phys. Rev. D 69, 094019 (2004) https://doi.org/10.1103/PhysRevD.69.094019
31	B. Q. Li and K. T. Chao, Higher charmonia and X,Y,Z states with screened potential, Phys. Rev. D 79, 094004 (2009) https://doi.org/10.1103/PhysRevD.79.094004
32	M. Blank and A. Krassnigg, Bottomonium in a Bethe–Salpeter-equation study, Phys. Rev. D 84, 096014 (2011) https://doi.org/10.1103/PhysRevD.84.096014
33	C. F. Qiao, F. Yuan, and K. T. Chao, A Crucial test for color octet production mechanism in Z0 decays, Phys. Rev. D 55, 4001 (1997) https://doi.org/10.1103/PhysRevD.55.4001
34	M. Ablikim, . (BESIII Collaboration), Evidence fore + e − → γχc1,2 at center-of-mass energies from 4.009 to 4.360 GeV, Chin. Phys. C 39(4), 041001 (2015) https://doi.org/10.1088/1674-1137/39/4/041001
35	M. Ablikim, . (BESIII Collaboration), Search for the Y (4140) via e + e − → γJ/ψ at s=4.23, 4.26, and 4.36 GeV, Phys. Rev. D 91(3), 032002 (2015) https://doi.org/10.1103/PhysRevD.91.032002
36	T. Branz, T. Gutsche, and V. E. Lyubovitskij, Hadronic molecule structure of the Y (3940) and Y (4140), Phys. Rev. D 80, 054019 (2009) https://doi.org/10.1103/PhysRevD.80.054019
37	T. Aaltonen, . (CDF Collaboration), Observation of the Y (4140) structure in the J/ψ φ mass spectrum in B ± → J/ψ φK decays, arXiv: 1101.6058 [hep-ex]
38	M. Ablikim, . (BESIII Collaboration), Study of e + e − → ωχcJ at center-of-mass energies from 4.21 to 4.42 GeV, Phys. Rev. Lett. 114(9), 092003 (2015) https://doi.org/10.1103/PhysRevLett.114.092003
39	L. Y. Dai, M. Shi, G. Y. Tang, and H. Q. Zheng, Nature of X(4260), Phys. Rev. D 92(1), 014020 (2015) https://doi.org/10.1103/PhysRevD.92.014020
40	Chang-Zheng Yuan, Evidence for resonant structures in e + e − → π + π − h c, Chin. Phys. C 38, 043001 (2014) https://doi.org/10.1088/1674-1137/38/4/043001
41	B. Aubert, . (BaBar Collaboration), Observation of a broad structure in the π + π − J/ψ mass spectrum around 4.26-GeV/c2 Phys. Rev. Lett. 95, 142001 (2005) https://doi.org/10.1103/PhysRevLett.95.142001
42	L. Ma, X. H. Liu, X. Liu, and S. L. Zhu, Strong decays of the XYZ states, Phys. Rev. D 91(3), 034032 (2015) https://doi.org/10.1103/PhysRevD.91.034032
43	M. Ablikim, . (BESIII Collaboration), Measurement of the e + e − → ηJ/ψ cross section and search for e + e − → π 0 J/ψ at center-of-mass energies between 3.810 and 4.600 GeV, Phys. Rev. D 91(11), 112005 (2015) https://doi.org/10.1103/PhysRevD.91.112005
44	X. L. Wang, . (Belle Collaboration), Observation of ψ(4040) and ψ(4160) decay into ηJ/ψ, Phys. Rev. D 87(5), 051101 (2013) https://doi.org/10.1103/PhysRevD.87.051101
45	G. Pakhlova, . (Belle Collaboration), Observation of a near-threshold enhancement in the e + e − → Λ + c Λ − c cross section using initial-state radiation, Phys. Rev. Lett. 101, 172001 (2008) https://doi.org/10.1103/PhysRevLett.101.172001
46	P. Guo, A. P. Szczepaniak, G. Galata, A. Vassallo, and E. Santopinto, Heavy quarkonium hybrids from Coulomb gauge QCD, Phys. Rev. D 78, 056003 (2008) https://doi.org/10.1103/PhysRevD.78.056003
47	J. J. Dudek and E. Rrapaj, Charmonium in lattice QCD and the non-relativistic quark-model, Phys. Rev. D 78, 094504 (2008) https://doi.org/10.1103/PhysRevD.78.094504
48	C. P. Shen, . (Belle Collaboration), Updated cross section measurement of e + e − → K + K − J/ψ and K0S K0S J/ψ via initial state radiation at Belle, Phys. Rev. D 89(7), 072015 (2014) https://doi.org/10.1103/PhysRevD.89.072015
49	T. Abe, . (Belle-II Collaboration), Belle II technical design report, arXiv: 1011.0352 [physics.ins-det]
50	Z. G. Zhao, Talk at the International Workshop on Physics at Future High Intensity Collider 2–7 GeV in China, <Date>January 13–16</Date>, 2015, University of Science and Technology of China (USTC), Hefei, China

Viewed

Full text

Abstract

Cited

Shared

Discussed