Measurement of charm production cross sections in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>annihilation at energies between 3.97 and 4.26 GeV

Cronin-Hennessy, D.; Gao, K. Y.; Hietala, J.; Kubota, Y.; Klein, T.; Lang, B. W.; Poling, R.; Scott, A. W.; Zweber, P.; Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Libby, J.; Powell, A.; Wilkinson, G.; Ecklund, K. M.; Love, W. A.; Savinov, V.; López, A.; Méndez, H.; Vargas, J. E. Ramirez; Ge, Jun; Miller, D. H.; Shipsey, I. P. J.; Xin, B.; Adams, G. S.; Anderson, M.; Cummings, J. P.; Danko, I.; Hu, Dandan; Moziak, B.; Napolitano, J.; He, Q.; Insler, J.; Muramatsu, H.; Park, C. S.; Thorndike, E. H.; Yang, F.; Artuso, M.; Blusk, S.; Khalil, S.; Li, J.; Mountain, R.; Nisar, S.; Randrianarivony, K.; Sultana, N.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Zhang, L. M.; Bonvicini, G.; Cinabro, D.; Dubrovin, M.; Lincoln, A.; Rademacker, J. H.; Asner, D. M.; Edwards, K. W.; Naik, P.; Reed, J.; Briere, R. A.; Ferguson, T.; Tatishvili, G.; Vogel, H.; Watkins, M. E.; Rosner, Jonathan L.; Alexander, J.; Cassel, D. G.; Duboscq, J. E.; Ehrlich, R.; Fields, L.; Gibbons, L. K.; Gray, R.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Hertz, D.; Jones, C. D.; Kandaswamy, J.; Kreinick, D. L.; Кузнецов, В. Е.; Mahlke-Krüger, H.; Mohapatra, D.; Onyisi, P. U. E.; Patterson, J. R.; Peterson, D.; Riley, D.; Rýd, A.; Sadoff, A. J.; Shi, X.; Stroiney, S.; Sun, W.; Wilksen, T.; Athar, S. B.; Patel, R.; Yelton, J.; Rubin, P.; Eisenstein, B. I.; Karliner, I.; Mehrabyan, S.; Lowrey, N.; Selen, M.; White, E. J.; Wiss, J.; Mitchell, R. E.; Shepherd, M. R.; Besson, D.; Pedlar, T. K.

doi:10.1103/physrevd.80.072001

Cited by 116 publications

(72 citation statements)

References 42 publications

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“…However, if one considers the experimental upper limits, from BABAR [11] and CLEO [50] collaborations, for the branching ratios BðYð4260Þ ! XÞ BðYð4260Þ !…”

Section: Discussionmentioning

confidence: 99%

Y(4260)as a mixed charmonium-tetraquark state

et al. 2012

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2012Y(4260) as a mixed charmonium-tetraquark state PHYSICAL REVIEW D, COLLEGE PK, v. 86, n. 11, supl. 1, Part 4, pp. 1659-1670, DEC 27, 2012 Using the QCD sum rule approach we study the Yð4260Þ state assuming that it can be described by a mixed charmonium-tetraquark current with J PC ¼ 1 ÀÀ quantum numbers. For the mixing angle around % ð53:0 AE 0:5Þ , we obtain a value for the mass which is in good agreement with the experimental mass of the Yð4260Þ. For the decay width into the channel Y ! J=c we find the value À Y!J=c % ð4:1 AE 0:6Þ MeV, which is much smaller than the total experimental width À % ð95 AE 14Þ MeV. However, considering the experimental upper limits for the decay of the Yð4260Þ into open charm, we conclude that we cannot rule out the possibility of describing this state as a mixed charmonium-tetraquark state.

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“…However, if one considers the experimental upper limits, from BABAR [11] and CLEO [50] collaborations, for the branching ratios BðYð4260Þ ! XÞ BðYð4260Þ !…”

Section: Discussionmentioning

confidence: 99%

Y(4260)as a mixed charmonium-tetraquark state

et al. 2012

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“…at 90% C.L.. A puzzling phenomenon of the Y(4260) is that it is absent in the R value scan [137,138,139,140,129,141], which is the challenge to the traditional vector charmonium interpretation of the Y(4260). We note that the R value denotes the ratio of the rate of hadron production to that for muon pairs in the annihilation of e + e − pair, i.e., R = σ(e + e − → hadrons)/σ(e + e − → µ + µ − ).…”

Section: Its Open Charm Decay Modesmentioning

confidence: 99%

The hidden-charm pentaquark and tetraquark states

et al. 2016

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In the past decade many charmonium-like states were observed experimentally. Especially those charged charmoniumlike Z c states and bottomonium-like Z b states can not be accommodated within the naive quark model. These charged Z c states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. We list the puzzles and theoretical challenges of these models when confronted with the experimental data. We also discuss possible future measurements which may distinguish the theoretical schemes on the underlying structures of the hidden-charm multiquark states.

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“…Such exclusive e þ e − cross sections to various open-charm final states were first measured at B-factories by Belle [12][13][14][15][16][17] and BABAR [18][19][20] using the initial-state radiation (ISR) processes, and by CLEO [21] using an energy scan in the range ffiffi ffi s p ¼ 3.97-4.26 GeV. The ISR process, in which a hard photon with a significant part of the initial energy is emitted before the electron-positron annihilition, allows one to measure e þ e − cross sections at the center-ofmass energies below the energy of the B-factory.…”

Section: Introductionmentioning

confidence: 99%

Angular analysis of the e+e−→D()±D∓<

Zhukova¹,

Pakhlova²,

Pakhlov³

et al. 2018

Phys. Rev. D

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We report a new measurement of the exclusive e V. ZHUKOVA et al. PHYS. REV. D 97, 012002 (2018)012002-2 radiation technique. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 951 fb −1 . The accuracy of the cross section measurement is increased by a factor of 2 over the first Belle study. We perform the first angular analysis of the e þ e − → D ÃAE D Ã∓ process and decompose this exclusive cross section into three components corresponding to the D Ã helicities.

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Measurement of charm production cross sections ine+e−annihilation at energies between 3.97 and 4.26 GeV

Cited by 116 publications

References 42 publications

Y(4260)as a mixed charmonium-tetraquark state

Y(4260)as a mixed charmonium-tetraquark state

The hidden-charm pentaquark and tetraquark states

Angular analysis of the e+e−→D()±D∓<

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Measurement of charm production cross sections ine+e−annihilation at energies between 3.97 and 4.26 GeV

Cited by 116 publications

References 42 publications

Y(4260)as a mixed charmonium-tetraquark state

Y(4260)as a mixed charmonium-tetraquark state

The hidden-charm pentaquark and tetraquark states

Angular analysis of the e+e−→D(*)±D*∓<

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Angular analysis of the e+e−→D()±D∓<