Structure Analysis of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>f</mml:mi></mml:mrow><mml:mrow><mml:mi>J</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mn>1710</mml:mn><mml:mo>)</mml:mo></mml:math>in the Radiative Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">J</mml:mi><mml:mi mathvariant="italic">/</mml:mi><mml:mi mathvariant="italic">ψ</mml:mi><mml:mo>→</

Bai, J. Z.; Bian, J. G.; Chai, Z.; Chen, G. P.; Chen, H. F.; Chen, J. C.; Chen, S. M.; Chen, Y.; Chen, Y. B.; Chen, Y. Q.; Cheng, B. S.; Cheng, Zhengdong; Cui, X. Z.; Ding, H. L.; Ding, Wanyu; Du, Z. Z.; Fan, X. L.; Fang, J.; Gao, C. S.; Gao, M.; Gao, S. Q.; Gu, JH; Gu, S.; Gu, W. X.; Gu, Y. F.; Guo, Y. N.; Han, S.; Han, Y. L.; He, J.; He, J.; He, M.; Hu, G. Y.; Hu, J. L.; Hu, Qin; Hu, T.; Hu, X. Q.; Huang, X. P.; Huang, Yizhong; Jiang, C. H.; Jin, S.; Jin, Y.; Kang, S. H.; Ke, Z. J.; Lai, Y. F.; Lan, H.; Lang, P. F.; Li, J.; Li, P. Q.; Li, Q.; Li, R. B.; Li, W.; Li, W. D.; Li, W. G.; Li, X. H.; Li, X. N.; Lin, S. Z.; Liu, H. M.; Liu, J.; Liu, J. H.; Liu, Q.; Liu, R. G.; Liu, Y.; Liu, Z. A.; Lu, F. X.; Lu, J. G.; Lu, Jie; Lu, L. C.; Luo, S.; Luo, Y.; M., A.; C., E.; M., J.; Mao, H. S.; Mao, Z. P.; Meng, X. C.; Ni, H.; Nie, J.; Qi, N. D.; Qiu, J. F.; Qu, Y. H.; Que, Y. K.; Rong, G.; Shao, Y.; Shen, B. W.; Shen, D. L.; Shen, Hong; Shen, X. Y.; Sheng, H. Y.; Shi, H. Z.; Song, X.; Sun, F.; Sun, H.; Sun, S. J.; Tan, Y. P.; Tang, S. Q.; Tong, G. L.; Wang, F.; Wang, J. F.; Wang, L. S.; Wang, L. Z.; Wang, M.; Men, Wang; Wang, P.; Wang, P. L.; Wang, S. M.; Wang, T. J.; Wang, Y. Y.; Wei, C.; Wu, Y. G.; Xi, D. M.; Xia, X. M.; Xie, P. P.; Xie, Y.; Xiong, W.; Xu, G. F.; Xu, R.; Xu, Z.; Xue, S.; Yan, Jun; Yan, W. G.; Yang, C.; Yang, C. Y.; Yang, Jian; Yang, Xiaofei; Ye, M. H.; Ye, S. W.; Ye, S. Z.; Yi, K.; Chen, Yu; Yu, C. X.; Z, Yu; Yu, Z.; Yuan, C. Z.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, De. H.; Zhang, H. L.; Zhang, J.; Zhang, J. W.; Zhang, L.; Zhang, L. S.; Zhang, Q. J.; Zhang, S. Q.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. Y.; Zhao, Dongxu; Zhao, H. W.; Zhao, Jiawei; Zhao, M. G.; Zhao, W.; Zhao, W. R.; Zheng, J. P.; Zheng, Lei; Zheng, Z. P.; Zhou, G. P.; Zhou, Hai-Qing; Li, Zhou; Zhou, Y.; Zhu, Q. M.; Zhu, Y.; Zhu, Y. S.; Zhuang, B. A.

doi:10.1103/physrevlett.77.3959

Cited by 38 publications

(22 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

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“…BES I [1166] decomposed the structure at about 1750 MeV/c 2 into a (small) scalar component at 1781 MeV/c 2 plus a large tensor component at 1696 MeV/c 2 . Hence the situation remained unclear.…”

Section: Scalar Mesons In Radiative J / Decaysmentioning

confidence: 99%

Glueballs, hybrids, multiquarks

2007

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Glueballs, hybrids and multiquark states are predicted as bound states in models guided by quantum chromo dynamics (QCD), by QCD sum rules or QCD on a lattice. Estimates for the (scalar) glueball ground state are in the mass range from 1000 to 1800 MeV, followed by a tensor and a pseudoscalar glueball at higher mass. Experiments have reported evidence for an abundance of meson resonances with 0 −+ , 0 ++ and 2 ++ quantum numbers. In particular, the sector of scalar mesons is full of surprises starting from the elusive and mesons. The a 0 (980) and f 0 (980), discussed extensively in the literature, are reviewed with emphasis on their Janus-like appearance as KK molecules, tetraquark states or qq mesons. Most exciting is the possibility that the three mesons f 0 (1370), f 0 (1500), and f 0 (1710) might reflect the appearance of a scalar glueball in the world of quarkonia. However, the existence of f 0 (1370) is not beyond doubt and there is evidence that both f 0 (1500) and f 0 (1710) are flavour octet states, possibly in a tetraquark composition. We suggest a scheme in which the scalar glueball is dissolved into the wide background into which all scalar flavour-singlet mesons collapse.There is an abundance of meson resonances with the quantum numbers of the . Three states are reported below 1.5 GeV/c 2 whereas quark models expect only one, perhaps two. One of these states, (1440), was the prime glueball candidate for a long time. We show that (1440) is the first radial excitation of the meson.Hybrids may have exotic quantum numbers which are not accessible by qq mesons. There are several claims for J P C = 1 −+ exotics, some of them with properties as predicted from the flux tube model interpreting the quark-antiquark binding by a gluon string. The evidence for these states depends partly on the assumption that meson-meson interactions are dominated by s-channel resonances. Hybrids with non-exotic quantum numbers should appear as additional states. Light-quark mesons exhibit a spectrum of (squared) masses which are proportional to the sum of orbital angular momentum and radial quantum numbers. Two states do not fall under this classification. They are discussed as hybrid candidates.The concept of multiquark states has received revived interest due to new resonances in the spectrum of states with open and hidden charm. The new states are surprisingly narrow and their masses and their decay modes often do not agree with simple quark-model expectations.Lattice gauge theories have made strong claims that glueballs and hybrids should appear in the meson spectrum. However, the existence of a scalar glueball, at least with a reasonable width, is highly questionable. It is possible that hybrids will turn up in complex multibody final states even though so far, no convincing case has been made for them by experimental data. Lattice gauge theories fail to identify the nonet of scalar mesons. Thus, at the present status of approximations, lattice gauge theories seem not to provide a trustworthy guide into unknown territory ...

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Section: Scalar Mesons In Radiative J / Decaysmentioning

confidence: 99%

Glueballs, hybrids, multiquarks

2007

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“…J=ψ decays have been extensively studied in the past [14] and are currently analyzed in e þ e − interactions by BES experiments [15,16]. The experimental observation of radiative ϒð1SÞ decays is challenging because their rate is suppressed by a factor of ≈0.025 compared to J=ψ radiative decays, which are of order 10 −3 [17].…”

Section: Introductionmentioning

confidence: 99%

Study of ϒ(1S) radiative decays to γπ+
Lees¹,
Poireau²,
Tisserand³
et al. 2018
Phys. Rev. D
9
2
3
0
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We study the ϒð1SÞ radiative decays to γπ þ π − and γK þ K − using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e þ e − collider at center-of-mass energies at the ϒð2SÞ and ϒð3SÞ resonances. The ϒð1SÞ resonance is reconstructed from the decay ϒðnSÞ→π þ π − ϒð1SÞ, n¼2, 3. Branching fraction measurements and spin-parity analyses of ϒð1SÞ radiative decays are reported for the I ¼ 0 S-wave and f 2 ð1270Þ resonances in the π þ π − mass spectrum, the f 0 2 ð1525Þ and f 0 ð1500Þ in the K þ K − mass spectrum, and the f 0 ð1710Þ in both.

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“…However, it is not well established that a J = 2 component exists. BES separated both J = 0 and J = 2 components, with the tensor state having mass 1697 MeV and a width of 176 MeV [32]. However, recent evidence supports only the J = 0 component [17,33].…”

Section: Discussion Of Mass Matrix Resultsmentioning

confidence: 99%

Tensor glueball–meson mixing phenomenology

Burakovsky

Page

2000

Eur. Phys. J. C

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The overpopulated isoscalar tensor states are sifted using Schwinger-type mass relations. Two solutions are found: one where the glueball is the f J (2220), and one where the glueball is more distributed, with f 2 (1820) having the largest component.The f 2 (1565) and f J (1710) cannot be accommodated as glueball-(hybrid) meson mixtures in the absense of significant coupling to decay channels. f ′ 2 (1525) → ππ is in agreement with experiment. The f J (2220) decays neither flavour democratically nor is narrow.

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Structure Analysis of thefJ(1710)in the Radiative DecayJ/ψ→

Cited by 38 publications

References 15 publications

Glueballs, hybrids, multiquarks

Glueballs, hybrids, multiquarks

Study of ϒ(1S) radiative decays to γπ+
Lees¹,
Poireau²,
Tisserand³
et al. 2018
Phys. Rev. D
9
2
3
0
View full text Add to dashboard Cite

Tensor glueball–meson mixing phenomenology

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Structure Analysis of thefJ(1710)in the Radiative DecayJ/ψ→

Cited by 38 publications

References 15 publications

Glueballs, hybrids, multiquarks

Glueballs, hybrids, multiquarks

Study of ϒ(1S) radiative decays to γπ+Lees1, Poireau2, Tisserand3 et al. 2018Phys. Rev. D9230View full textAdd to dashboardCite

Tensor glueball–meson mixing phenomenology

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Product

Resources

About

Study of ϒ(1S) radiative decays to γπ+
Lees¹,
Poireau²,
Tisserand³
et al. 2018
Phys. Rev. D
9
2
3
0
View full text Add to dashboard Cite