Experimental studies of the π+π-π+π-π0, K+K-π+π-π0 and pp̄π+π-π0 final states produced in e+e- annihilation at 
                
                  
                
                $\sqrt{s}= 3.773$
               and 3.650 GeV

Ablikim, M.; Bai, J. Z.; Ban, Y.; X, Cai; Chen, H.F.; Chen, H.S.; Chen, H.X.; Chen, J.C.; Chen, Jin; Chen, Y.B.; Chu, Y. P.; Dai, Y. S.; Diao, L. Y.; Deng, Z. Y.; Dong, Qingshun; Du, S. X.; Fang, J.; Fang, S. S.; Fu, C. D.; Gao, C. S.; Gao, Y.; Gu, S.; Gu, Y. T.; Guo, Y. N.; He, K. L.; He, M.; Heng, Y. K.; Hou, J.; Hu, H. M.; Hu, J. H.; Hu, T.; Huang, X. T.; Ji, Xiangdong; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jin, D. P.; Jin, S.; Lai, Y. F.; Li, G.; Li, H.B.; Li, J.; Li, R.Y.; Li, S.M.; Li, W.D.; Li, W.G.; Li, X.L.; Li, X.N.; Li, X.Q.; Liang, Y. F.; Liao, H.; Liu, Benqiang; Liu, C.X.; Liu, F.; Liu, Fang; Liu, H.H.; Liu, H.M.; Liu, J.; Liu, J.B.; Liu, J.P.; Liu, Jian; Liu, Q.; Liu, R.G.; Liu, Z.A.; Lou, Yunjiang; Lu, F. X.; Lu, G. R.; Lu, J. G.; Luo, C. L.; Ma, F.C.; Ma, H.L.; L., L.; Ma, Qiang; Mao, Z. P.; Mo, X. H.; Nie, J.; Ping, R. G.; Qi, N. D.; Qin, H.; Qiu, J. F.; Ren, Z.; Rong, G.; Ruan, X. D.; Shan, L. Y.; Shang, L.; Shen, D. L.; Shen, X. Y.; Sheng, H. Y.; Sun, H.; Sun, S. S.; Sun, Y. Z.; Sun, Zhi‐Wei; Tang, X.; Tong, G. L.; Wang, D.Y.; Wang, L.; Wang, L.L.; Wang, L.S.; Wang, M.; Wang, P.; Wang, P.L.; Wang, Yifei; Wang, Z.; Wang, Z.Y.; Wang, Zheng; Chen, Wei; Wei, D. H.; Weng, Y.; Wu, N.; Xia, X. M.; Xie, X. X.; Xu, G. F.; Xu, X. P.; Xu, Y.; Yan, Mu-Lin; Yang, H. X.; Yang, Yifan; Ye, M.H.; Ye, Y.X.; Yu, G.; Yuan, C. Z.; Yuan, Y.; Zang, S. L.; Zeng, Y.; Zhang, B.X.; Zhang, B.Y.; Zhang, C.C.; Zhang, D.H.; Zhang, H.Q.; Zhang, H.Y.; Zhang, J.W.; Zhang, J.Y.; Zhang, S.H.; Zhang, X.Y.; Zhang, Yiyun; Zhang, Z.X.; Zhang, Z.P.; Zhao, Dongxu; Zhao, J. W.; Zhao, M. G.; Zhao, P. P.; Zhao, W. R.; Zhao, Z.; Zheng, Han-Qing; Zheng, J. P.; Zheng, Z. P.; Li, Zhou; Zhu, K. J.; Zhu, Q. M.; Zhu, Y.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, B. A.; Zhuang, X.; Zou, B. S.

doi:10.1140/epjc/s10052-007-0438-9

Cited by 11 publications

(12 citation statements)

References 28 publications

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“…To search for light hadron decays of ψ(3770), both BES [586][587][588][589][590][591][592] and CLEO [593][594][595] extensively studied various exclusive light hadron decay modes for ψ(3770) → LH (LH ≡ light hadron), but for only one channel was found to have a significant signal: CLEO [595] measured the branching fraction B(ψ(3770) → φη) = (3.1 ± 0.6 ± 0.3) × 10 −4 . This branching fraction is obtained by subtracting the extrapolated continuum cross section for e + e − → φη measured at √ s = 3671 MeV from that measured at 3.773 GeV.…”

Section: χCj (1p ) Hadronic Decaysmentioning

confidence: 99%

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

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103

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A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the B-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations at BESIII, the LHC, RHIC, FAIR, the Super Flavor and/or Tau-Charm factories, JLab, the ILC, and beyond. The list of newly-found conventional states expanded to include hc(1P ), χc2(2P ), B + c , and η b (1S). In addition, the unexpected and still-fascinating X(3872) has been joined by * Editors † Section coordinators ‡ Corresponding author: bkh2@cornell.edu more than a dozen other charmonium-and bottomonium-like "XY Z" states that appear to lie outside the quark model. Many of these still need experimental confirmation. The plethora of new states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of cc, bb, and bc bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. Lattice QCD has grown from a tool with computational possibilities to an industrialstrength effort now dependent more on insight and innovation than pure computational power. New effective field theories for the description of quarkonium in different regimes have been developed and brought to a high degree of sophistication, thus enabling precise and solid theoretical predictions. Many expected decays and transitions have either been measured with precision or for the first time, but the confusing patterns of decays, both above and below open-flavor thresholds, endure and have deepened. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hotand cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.

show abstract

Section: χCj (1p ) Hadronic Decaysmentioning

confidence: 99%

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

Self Cite

103

View full text Add to dashboard Cite

show abstract

“…Evidently, the two collaborations give very different results of the non-DD decay of ψ(3770). Meanwhile, various exclusive decay channels have been investigated by BES [7][8][9][10][11] and CLEO [12][13][14] in order to search for further non-DD decay modes of ψ(3770).…”

Section: Introductionmentioning

confidence: 99%

Further understanding of the non-DD¯decays ofψ(3770)

Liu

Wang

et al. 2013

Phys. Rev. D

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We provide details of the study of ψ(3770) non-DD decays into V P , where V and P denote light vector meson and pseudoscalar meson, respectively. We find that the electromagnetic (EM) interaction plays little role in these processes, while the strong interaction dominates. The strong interaction can be separated into two parts, i.e. the short-distance part probing the wave function at origin and the long-distance part reflecting the soft gluon exchanged dynamics. The long-distance part is thus described by the intermediate charmed meson loops. We show that the transition of ψ(3770) → V P can be related to ψ(3686) → V P such that the parameters in our model can be constrained by comparing the different parts in ψ(3770) → V P to those in ψ(3686) → V P . Our quantitative results confirm the findings of [Zhang et al., Phys. Rev. Lett. 102, 172001 (2009)] that the OZI-rule-evading long-distance strong interaction via the IML plays an important role in ψ(3770) decays, and could be a key towards a full understanding of the mysterious ψ(3770) non-DD decay mechanism.

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“…I and II, where the first error is statistical and the second systematic. In the measurements of the observed cross sections, the systematic errors arise from the uncertainties in integrated luminosity of the data set (2.1% [4,5]), photon selection (2.0% per photon), tracking efficiency (2.0% per track), particle identification (0.5% per pion or kaon), kinematic fit (1.5%), K 0 S reconstruction (1.1% [27]), branching fractions quoted from PDG [33] (0.03% for B(π 0 → γγ) and 0.07% for B(K 0 S → π + π − )), Monte Carlo modeling (6.0% [19,20,21]), Monte Carlo statistics (1.4% ∼ 4.4%), background subtraction (0.0% ∼ 3.0%) and fit to mass spectrum (0.4% ∼ 8.5%). Adding these uncertainties in quadrature yields the total systematic error ∆ sys for each mode at √ s = 3.773 and 3.650 GeV.…”

Section: B Observed Cross Sectionsmentioning

confidence: 99%

“…Summing over these measured branching fractions yields the sum of the branching fractions for the ψ(3770) exclusive non-DD decays not more than 2%. In addition, BES and CLEO Collaborations also attempted to search for other ψ(3770) exclusive charmless decays [17,18,19,20,21] [ 16,22,23]. However, the existing results can not clarify the possible excess.…”

Section: Introductionmentioning

confidence: 99%