Measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi></mml:math>Semileptonic Branching Ratio in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Annihilation at the<mml:math xmlns

Bacino, W.; Baumgarten, A.; Birkwood, Len; Buchanan, C.; Burns, R.R.; Chronoviat, M.; Condon, P.; Coombes, R.; Cowell, P.; Diamant-Berger, A.; Faessler, M.; Ferguson, T.; Hall, Allison Reinsvold; Hauptman, J. M.; Kirkby, J.; Kirz, Janos; Liu, J.; Nodulman, L.; Ouimette, D.; Porat, D.; Rasmussen, C. Ø.; Schwartz, M.; Slater, W.; Ticho, Harold K.; Wojcicki, S. G.; Zupančič, Č.

doi:10.1103/physrevlett.40.671

Cited by 101 publications

(15 citation statements)

References 4 publications

Supporting

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“…at W :::: :: 3.8 GeV), and is considerably weaker when it is far from such thresholds (so that, fo r example, D and D* look degenerate). The predicted electronic width of about 150 eV is 2.5 times smaller than that reported by the SLAC-LBL collaboration (370 ±90 eV) (90) while nearly the same as that measured by the DELCO group (180 ± 45 eV) (91). Completed some time before charmed meson masses were accurately measured, it assumed the thresholds WD D = 3.730, WD D< = 3.885, WD ODO = 4.040, WF F = 4.00, WF F* = 4.l5, and WF *F* = 4.30 Gev.…”

Section: 57supporting

confidence: 58%

Charm and Beyond

Appelquist¹,

Barnett²,

Lane³

1978

Annu. Rev. Nucl. Part. Sci.

223

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Section: 57supporting

confidence: 58%

Charm and Beyond

Appelquist¹,

Barnett²,

Lane³

1978

Annu. Rev. Nucl. Part. Sci.

223

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“…We estimate partial decay width Γ and Γ cf (with QCD correction factor) of annihilation processes, using the masses predicted by our potential model and the radial wave function at the origin, for e + e − , two-photon, three-photon, twogluon, three-gluon, γgg and qq+g are tabulated in Tables (7)(8)(9)(10)(11)(12)(13) and are compared with experimental results from PDG [4] as well as other theoretically calculated estimates.…”

Section: Resultsmentioning

confidence: 99%

“…Rapidis and others at SLAC, LGW collaboration, observed a resonance with mass 3772 ± 6 MeV, just above the threshold for the production of charmed particles [11]. In parallel observation, W. Bacino and others at SLAC discovered and confirmed the ψ(3770) resonance with mass 3770±6 MeV [12] and the parameters were determined by SLAC and LBL collaborations [13]. In 2006 BES Collaboration measured the precise measurements of the mass of ψ(3770) resonance [14] and recently its parameters have been measured using the data collected with the KEDR detector [15].…”

Section: Introductionmentioning

confidence: 85%

Spectroscopy and decay properties of charmonium

Kher

Kumar

2018

Chinese Phys. C

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The mass spectra of charmonium are investigated using a Coulomb plus linear (Cornell) potential. Gaussian wave function in position space as well as in momentum space are employed to calculate the expectation value of potential and kinetic energy respectively. Various experimental states (X(4660)(5 3 S1), X(3872)(2 3 P1), X(3900)(2 1 P1), X(3915)(2 3 P0) and X(4274)(3 3 P1) etc.) are assigned as charmonium states. We also study the Regge trajectories, pseudoscalar and vector decay constants, the Electric and Magnetic dipole transition rates and the annihilation decay width for charmonium states.

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“…-At higher energy the total cross section ratio R is measured inclusively. We use the data provided by the experiments γγ2 [56], MARK I [57], DELCO [58], DASP [59], PLUTO [60], LENA [61], Crystal Ball [62], MD-1 [63], CELLO [64], JADE [65], MARK-J [66], TASSO [67], CLEO [68], CUSB [69] and MAC [70]. Above 3.5 GeV the measurements of the MARK I Collaboration are significantly higher than those from LENA, PLUTO and Crystal Ball.…”

Section: The Origin Of the Datamentioning

confidence: 99%

Improved determination of the hadronic contribution to the muon ( ${g-2}$) and to ${\alpha(M_{\mathrm Z}^2)}$ Using new data from hadronic $\tau$ decays

Alemany¹,

Davier²,

Höcker³

1998

Eur. Phys. J. C

200

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We have reevaluated the hadronic contribution to the anomalous magnetic moment of the muon (g − 2) and to the running of the QED fine structure constant α(s) at s = M 2 Z . We incorporated new data from hadronic τ decays, recently published by the ALEPH Collaboration. In addition, compared to previous analyses, we use more extensive e + e − annihilation data sets. The integration over the total hadronic cross section is performed using experimental data up to 40 GeV and results from perturbative QCD above 40 GeV. The improvement from τ data concerns mainly the pion form factor, where the uncertainty in the corresponding integral could be reduced by more than a factor of two. We obtain for the lowest order hadronic vacuum polarization graph a had µ = (695.0 ± 15.0)×10 −10 and ∆α (5) had (M 2 Z ) = (280.9 ± 6.3)×10 −4 using e + e − data only. The corresponding results for combined e + e − and τ data are a had µ = (701.1 ± 9.4)×10 −10 and ∆α (5) had (M 2 Z ) = (281.7 ± 6.2) ×10 −4 , where the latter is calculated using the contribution from the five lightest quarks.

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Measurement of theDSemileptonic Branching Ratio ine+e−Annihilation at the

Cited by 101 publications

References 4 publications

Charm and Beyond

Charm and Beyond

Spectroscopy and decay properties of charmonium

Improved determination of the hadronic contribution to the muon ( ${g-2}$) and to ${\alpha(M_{\mathrm Z}^2)}$ Using new data from hadronic $\tau$ decays

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