Observation of a Broad Structure in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math>Mass Spectrum around<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>4.26</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi><mml:mo>/</mml:mo><mml:msup><mml:mi>

Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Graugés, E.; Palano, A.; Pappagallo, M.; Pompili, A.; Chen, J. C.; Qi, N. D.; Rong, G.; Wang, P.; Zhu, Y. S.; Eigen, G.; Ofte, I.; Stugu, B.; Abrams, G. S.; Battaglia, M.; Breon, A. B.; Brown, D. N.; Button‐Shafer, J.; Cahn, R. N.; Charles, E.; Day, C. T.; Gill, M. S.; Gritsan, A. V.; Groysman, Y.; Jacobsen, R. G.; Kadel, R. W.; Kadyk, J. A.; Kerth, L. T.; Kolomensky, Yu. G.; Kukartsev, G.; Lynch, G.; Mir, L. M.; Oddone, P. J.; Orimoto, T.; Pripstein, M.; Roe, N. A.; Ronan, M. T.; Wenzel, W. A.; Barrett, M.; Ford, K. E.; Harrison, T.; Hart, A. J.; Hawkes, C. M.; Morgan, S. E.; Watson, A. T.; Fritsch, M.; Goetzen, K.; Held, T.; Koch, H.; Lewandowski, B.; Pelizaeus, M.; Peters, K.; Schroeder, T. Vazquez; Steinke, M.; Boyd, J. T.; Burke, J. P.; Chevalier, N.; Cottingham, W. N.; Çuhadar-Dönszelmann, T.; Fulsom, B. G.; Hearty, C.; Knecht, N. S.; Mattison, T. 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A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Stelzer, J.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va’vra, J.; Weaver, M.; Wisniewski, W. J.; Wittgen, M.; Wright, D.; Yarritu, A. K.; Yi, K.; Young, C. C.; Burchat, P. R.; Edwards, A. J.; Majewski, S.; Petersen, B. A.; Roat, C.; Ahmed, M.; Ahmed, S.; Alam, M. S.; Ernst, J.; Saeed, M. A.; Wappler, F. R.; Zain, S. B.; Bugg, W.; Krishnamurthy, M.; Spanier, S.; Eckmann, R.; Ritchie, J. L.; Satpathy, A.; Schwitters, R. F.; Izen, J. M.; Kitayama, I.; Lou, X.; Williams, G.; Ye, S.; Bianchi, F.; Bóna, M.; Gallo, F.; Gamba, D.; Bomben, M.; Bosisio, L.; Cartaro, C.; Cossutti, F.; Ricca, G. Della; Dittongo, S.; Grancagnolo, S.; Lanceri, L.; Vitale, L.; Martínez-Vidal, F.; Panvini, R. S.; Banerjee, S.; Bhuyan, B.; Brown, C. M.; Fortin, D.; Hamano, K.; Kowalewski, R.; Roney, J. M.; Sobie, R. J.; Back, J. J.; Harrison, P. F.; Latham, T.; Mohanty, G. B.; Band, H. R.; Chen, X.; Cheng, B.; Dasu, S.; Datta, M.; Eichenbaum, A. M.; Flood, K. T.; Graham, M. T.; Hollar, J. J.; Johnson, J. R.; Kutter, P. E.; Li, H.; Liu, R.; Mellado, B.; Mihályi, A.; Pan, Y.; Prepost, R.; Tan, P.; Wimmersperg-Toeller, J. H. von; Wu, S. L.; Yu, Z.; Neal, H. A.

doi:10.1103/physrevlett.95.142001

Cited by 673 publications

(184 citation statements)

References 15 publications

(3 reference statements)

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“…The missing spin singlet states as well as new, yet to be explained states such as the X(3872) [1], Y(4260) [2], Y(3940) [3] and others have presented a new challenge for the theoretical particle physics community.…”

Section: Introductionmentioning

confidence: 99%

Charmonium spectroscopy on dynamical anisotropic lattices

Juge¹,

Cais²,

Oktay³

et al. 2006

Nuclear Physics B - Proceedings Supplements

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show abstract

Section: Introductionmentioning

confidence: 99%

Charmonium spectroscopy on dynamical anisotropic lattices

Juge¹,

Cais²,

Oktay³

et al. 2006

Nuclear Physics B - Proceedings Supplements

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show abstract

“…4. It can decay 24 whose mass and the total decay width is 4259 MeV (88±23±5 MeV). Therefore, they can be identified.…”

Section: Discussion and Summarymentioning

confidence: 99%

A Partial Width Calculation of OZI-Allowed Charmonium Decays in a Coupled Channel Framework

et al. 2009

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Abstract. OZI-allowed partial decay widths, masses, and total decay width of charmonium states are studied in a nonrelativistic coupled-channel framework based on microscopic effective quark interactions. With the help of the complex scale transformation, the coupled channel equation is easily solved under the proper boundary condition for resonances. The obtained result as a whole is very successful and encouraging for the traditional charmonium states including ψ(4040) whose features of mass and partial decay widths have been argued historically. The coupling mechanisms of these states are investigated by reducing artificially the channel coupling strengths little by little and finally turning the coupling off. The situations turn out to be quite different from what we would have naively supposed. Other solutions than the traditional charmonium states were obatined at the same time. Some of them are discussed in relation with new particles observed recently.

show abstract

“…One of the current interests of BESIII is to study the nature of the so-called Y (4260). This state was discovered via the initial-state-radiation (ISR) process e + e − → γ ISR π + π − J/ψ by the BaBar collaboration [46,47] and confirmed by CLEO [48,49], and Belle [50]. Unlike other charmonium states with the same quantum numbers in the same mass region, such as the ψ(4040),ψ(4160), and ψ(4415), the Y (4260) state does not have a natural place within the quark model of charmonium.…”

Section: Terra Incognitamentioning

confidence: 99%

Recent results from BESIII

Messchendorp¹

2013

Proceedings of 51st International Winter Meeting on Nuclear Physics — PoS(Bormio 2013)

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Despite the successes of the standard model, the non-perturbative dynamics of the strong interaction are not fully understood yet. Charmonium spectroscopy serves as an ideal tool to shed light on the dynamics of the strong interaction such as quark confinement and the generation of hadron masses. The BESIII collaboration studies extensively the strong interaction and various aspects that could shed light on physics beyond the standard model via copious e + e − collisions at the BESIII/BEPCII facility in Beijing, China, in the charmonium mass regime. I present a few of the recent results with the emphasis on charmonium spectroscopy and decay studies using 106×10 6 ψ(3686) events.International Winter Meeting on Nuclear Physics, 21-25 January 2013 Bormio, Italy * Speaker. PoS(Bormio 2013)043Physics with Charmonium at BESIII Johan Messchendorp Figure 1: The strong coupling constant, α S , as a function of the distance scale. Towards larger distances, QCD becomes non-perturbative, and gives rise to spectacular phenomena such as the generation of hadron masses and quark confinement.

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Observation of a Broad Structure in theπ+π−J/ψMass Spectrum around4.26 GeV/

Cited by 673 publications

References 15 publications

Charmonium spectroscopy on dynamical anisotropic lattices

Charmonium spectroscopy on dynamical anisotropic lattices

A Partial Width Calculation of OZI-Allowed Charmonium Decays in a Coupled Channel Framework

Recent results from BESIII

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