Studies of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ξ</mml:mi></mml:math>(2230) in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">J</mml:mi></mml:math>/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ψ</mml:mi></mml:math>Radiative Decays

Bai, J. Z.; Chen, G. P.; Chen, H. F.; Chen, S. J.; Chen, S. M.; Chen, Y.; Chen, Y. B.; Chen, Y. Q.; Cheng, B. S.; 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, M.; Hu, G. Y.; Hu, T.; Hu, X. Q.; Huang, D. Q.; Huang, T.; Huang, Yizhong; Jiang, C. H.; Jin, S.; Jin, Yanling; Kang, S. H.; Ke, Z. J.; Lai, Y. F.; Lan, H.; Lang, P. F.; Li, 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, J. G.; Lu, Jie; 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.; 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, L. S.; Wang, L. Z.; Wang, M.; Wang, P.; Wang, P. L.; Wang, S. M.; Wang, T. J.; Wang, Y. Y.; Wei, C.; Xi, D. M.; Xia, X. M.; Xie, P. P.; Xie, Y.; Xiong, W.; Xu, D.; Xu, R.; Xu, Z.; Xue, S.; Yan, Jun; Yan, W. G.; Yang, C.; Yang, C. Y.; Yang, Jian; Yang, W. C.; Ye, M. H.; Ye, S. W.; Ye, S. Z.; Chen, Yu; Yu, C. X.; Z, Yu; Yu, Z.; Yuan, C. Z.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. L.; Zhang, J.; Zhang, J. W.; Zhang, L.; Zhang, L. S.; Zhang, Shunan; Zhang, X. Y.; Zhang, Y.; Zhang, Y. Y.; Zhao, Dongxu; Zhao, H. W.; Zhao, Jiawei; Zhao, M. G.; Zhao, P. D.; Zhao, W. R.; Zheng, J. P.; Zheng, Lei; Zheng, Z. P.; Zhou, G. P.; Zhou, Hai-Qing; Zhou, L.; Zhou, X.; Zhou, Y.; Zhu, Q. M.; Zhu, Y.; Zhu, Y. S.; Zhuang, B. A.

doi:10.1103/physrevlett.76.3502

Cited by 104 publications

(43 citation statements)

References 23 publications

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“…Recent measurements of J/ψ radiative decay by BES, also with ∼ 8 × 10 6 J/ψ events, claim observation of f J (2220) at the level of several standard deviations in the π + π − , K + K − , K S K S , pp (Bai, 1996a) and π 0 π 0 (Bai, 1998) channels. Mass distributions in the region of the f J (2220) are reproduced from (Bai, 1996a) in Fig. 27.…”

Section: The F J (2220)mentioning

confidence: 99%

“…This subject has not been reviewed for some time (Hitlin and Toki, 1988;Königsman, 1986). Since then, however, new results have been presented from the DM2 collaboration at Orsay (Augustin, 1988(Augustin, , 1990) and the Mark III experiment at SPEAR (Dunwoodie, 1997;Burchell, 1991), and new data is being collected and analyzed by the BES collaboration at Beijing (Bai, 1996a(Bai, , 1996b(Bai, , 1998).…”

Section: Radiative J/ψ Decaysmentioning

confidence: 99%

“…The f 0 (1500) has also been observed by the OBELIX experiment (Bertin, 1998) in thenp → π + π + π − reaction for neutrons in flight, and also in "glue rich" central production reactions pp → p f (π + π − π + π − )p s and pp → p f (π + π − )p s , most recently by the WA91 (Antinori, 1995) and WA102 (Barberis, 1997b) collaborations. There is some evidence of J/ψ → γf 0 (1500) with f 0 (1500) → π + π − π + π − (Bugg, 1995) and perhaps also with f 0 (1500) → π + π − (Dunwoodie, 1997), but S-wave structure in the K + K − and K S K S final states seems absent in this mass region for J/ψ radiative decay (Bai, 1996a;Dunwoodie, 1997). For a collective discussion of these data and the evidence that the f 0 (1500) is a glueball, see (Amsler and Close, 1995;Amsler and Close, 1996;Close, Farrar, and Li, 1997c;Close, 1997a;Amsler, 1998).…”

Section: The F 0 (1500)mentioning

confidence: 99%

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Light-meson spectroscopy

1999

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We survey the current status of light meson spectroscopy. We begin with a general introduction to meson spectroscopy and and its importance in understanding the physical states of Quantum Chromo Dynamics (QCD). Phemenological models of hadron spectroscopy are described with particular emphasis on the constituent quark model and the qualitative features it predicts for the meson spectrum. We next discuss expectations for hadrons lying outside the quark model, such as hadron states with excited gluonic degrees of freedom. These states include so-called hybrids and glueballs, as well as multiquark states. The established meson states are compared to the quark model predictions and we find that most meson states are well described by the quark model. However, a number of states in the light-quark sector do not fit in well, suggesting the existence of hadronic states with additional degrees of freedom. We end with a brief description of future directions in meson spectroscopy.2

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Section: The F J (2220)mentioning

confidence: 99%

Section: Radiative J/ψ Decaysmentioning

confidence: 99%

Section: The F 0 (1500)mentioning

confidence: 99%

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Light-meson spectroscopy

1999

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“…In addition, a peak around 2230 MeV shows up clearly in the f 2 η mode. It has a mass compatible with ξ(2230) observed in J/Ψ radiative decays [7,16], but has a larger width of ∼ 150 MeV.…”

Section: Amplitude Analysis Ofppmentioning

confidence: 64%

Search for glueballs from three-body annihilation of in-flight

Zou

1999

Nuclear Physics A

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“…(V) There is also the ξ(2220) [33] which may be an example of a state with simultaneous presence of gg, qq, qqqq, and qqg components. Given its proximity to the ΛΛ threshold, this could be the key channel.…”

mentioning

confidence: 99%

Λs(1405) and negative parity baryon states

Pakvasa

Tuan

1999

Physics Letters B

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After a brief historical background on the Λ s (1405), we revisit the 25 year old controversy on whether Λ s (1405) is a qqq (L=1) three quark state or aKN quasi virtual bound state. This work is stimulated by the recent suggestion of Isgur that s be treated as a heavy quark in heavy quark effective theory HQET. We re-examine the empirical evidence for minimal mixing amongst singlets and octets in negative parity baryon states, with a possible dynamical origin in the opening of inelastic threshold channels. Finally, we suggest that Λ s (1405) belongs to a class of hadrons which are described simultaneously as qqq or qq states and as hadronic bound states. *

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Studies ofξ(2230) inJ/ψRadiative Decays

Cited by 104 publications

References 23 publications

Light-meson spectroscopy

Light-meson spectroscopy

Search for glueballs from three-body annihilation of in-flight

Λs(1405) and negative parity baryon states

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